#carbonate de calcium

[2t2r]

Les fabuleux paysages du lac Mono, mer morte de Californie

Nouvel article publié sur https://www.2tout2rien.fr/lac-mono-mer-morte-de-californie/

Les fabuleux paysages du lac Mono, mer morte de Californie

[justforbooks]

Quelle différence entre levain et levure ?

Pour faire « lever » une pâte à pain, on ajoute aux ingrédients une petite quantité d’organismes vivants microscopiques (levures et/ou bactéries) qui, en se nourrissant des glucides présents dans la farine, produisent des bulles de gaz (CO2) qui assurent le gonflement du pain avant cuisson.

La levure dite « de boulanger » est un mélange de différentes souches de Saccharomyces cerevisiae, tout comme la levure de bière (les deux ne différant que par la composition des souches en présences). Cette levure est utilisée depuis l’antiquité pour faire du pain, du vin, de la bière et autres boissons fermentées, même s’il faut bien sûr attendre les travaux de Pasteur au XIXe siècle pour en découvrir l’identité.

Le levain naturel est quant à lui obtenu par fermentation « spontanée » d’un mélange d’eau et de farine (parfois additionné d’un peu de miel, jus de fruit ou tout autre apport de sucre qui favorise la fermentation), les ferments étant alors des micro-organismes (principalement des bactéries lactiques et des levures sauvages diverses) naturellement présents dans les matières premières et l’environnement. Le levain a longtemps été la seule manière de faire lever du pain. Sa fonction, comme celle de la levure, est d’assurer la levée en produisant du gaz carbonique.

Les ferments de la levure et du levain ne sont pas les mêmes : la levure donne une fermentation alcoolique rapide tandis que le levain une fermentation lactique plus lente et plus digeste. Le levain « digère » l’acide phytique que l’on trouve notamment dans les farines complètes et intégrales. Celui-ci a la mauvaise habitude de séquestrer les minéraux (zinc, calcium, magnesium et fer). Ce n’est pas le cas de la levure de boulanger. Les nutriments sont donc d’avantage disponible dans le pain au levain.

Pourquoi avoir remplacé le levain par le levure industrielle ?

La raison est purement commerciale : gain de temps, gain de productivité, gain d’argent. Plus la fermentation va vite (1 à 2h avec la levure, vs 8 à 10h et plus avec le levain naturel), plus le boulanger va pouvoir faire des fournées différentes dans la même journée, plus il vendra de pain, plus il gagne de l’argent.

Levures et levains sont composés de cellules vivantes et ne doivent donc pas être confondus avec la « levure » chimique (ou poudre levante), mélange de bicarbonate de sodium et d’acide tartrique qui produit du dioxyde de carbone lors de la cuisson des préparations dans lesquelles il a été ajouté.

Daily inspiration. Discover more photos at Just for Books…?

[inceptionauta]

Geomorphology

N Meseta 700-800m

Montemuro

Marão

Peneda

Gerês

Larouco

C Meseta 700-400m

1000m Estrela

Gardunha

Lousã

S Meseta 800-200m

300 m Serra Arrábida

Monchique

Geochemistry

Limestones

Erosion

dissolution by rain;

diaclases network

deep H2O

infiltration

Calcium Carbonate vs. CO2 = Calcium Bicarbonate (soluble)

Activity: < agricultural production; > pastoralism; > regeneration walls;

Caves, Algares

Underground Rivers - porosity

Almonda River; Alviela River

Lapiás - wind + rain

80 M Pedra Furada - Pêro Pinho;

Mountains

Montejunto; Aires; Candeeiros; Polje de Minde

Granitic

Erosion

H2O: + friable zones

> concentration drainage living cliffs

< permeability

Serra do Gerês

Shale

rock < hard vs. granite

< permeable dense water lines

rounded massive

< cliff conservation

Ravines

Streams

[a-modernmajorgeneral]

Viewers turning in for the track and field events at the Summer Games in Paris next week might just do a double-take: Instead of the usual rust-colored reddish hue, the track is purple.

The new, eye-catching color will serve as the backdrop for runners competing at the Stade de France, the country’s largest stadium, located in the northern Paris suburb of Saint-Denis. The track is made by Mondo, a company based in Alba, Italy, that has made every track used at the Olympics since 1976.

The color was mainly an aesthetic choice, as purple, blue and green make up the palette for the competition venues at this year’s games. The design actually incorporates three separate colors: lavender for the track itself, darker purple for the service areas and gray for the exterior curves at each end.

Even the glue used to adhere the track to its asphalt base—2,800 pots in total—is purple, just in case any becomes visible.

“The big part of the job was to come up with a track that was different from what we had seen … to go a little bit outside the box,” says Alain Blondel, an Olympic decathlete who now serves as the sports manager for the Paris games, to Olympics.com’s Nicolas Kohlhuber.

This is the first time an Olympic track has been purple. But it’s not uncommon for athletics venues around the world to play around with color. For example, since 1986, Boise State University has famously eschewed the traditional green-colored turf for its football field, opting instead for a shocking shade of bright blue.

Color aside, the Paris track is unique for several other reasons. For one, it incorporates the shells of bivalve mollusks, like mussels and clams. Ahead of the games, track-maker Mondo began partnering with a mussel farming and fishing company called Nieddittas to give used shells a second life.

Staff at Nieddittas harvest, clean and prepare the shells—which are made primarily of calcium carbonate—so they can be ground into a powder that can be incorporated into the track material. The shells would have otherwise been headed to a landfill, so the process transforms waste into something useful. It also reduces the need for mining, which is how manufacturers usually obtain calcium carbonate.

All told, 50 percent of the Paris track comes from recycled materials, reports BBC’s Padraig Belton.

This innovative use of recycled natural materials aligns with the goals of the International Olympic Committee, which vowed to make the Summer Games in Paris the most sustainable Olympics yet. Other sustainability efforts include bike parking at many venues, more plant-based food options for spectators, 100 percent locally sourced renewable energy, a geothermal cooling system at the Olympic Village and aquatic center seats made from recycled plastic bottle caps, among many others.

The track’s design and materials may also help athletes perform their best. The Paris track has the same base as the one used at the 2020 Summer Games in Tokyo, with some minor modifications, per reporting by Reuters’ Manuel Ausloos and Vincent Daheron. At those games, athletes set three world records and 12 Olympic records—and officials expect even more records to fall next week in Paris.

“The first indications are that it will be a very, very good track,” Blondel told the Associated Press’ (AP) Jerome Pugmire in April. “If we see athletes with personal bests on the scoreboard, it means we did a good job.”

For this iteration of the track, Mondo researchers improved upon the new polymeric material first introduced in Tokyo. They also used computer algorithms to further refine the optimal shape and size of the air bubbles within the lower layer of the track, which help absorb and then rebound the energy from the runner’s foot striking the ground.

The vulcanized rubber provides good grip and resistance for Paralympic athletes who use wheelchairs and prosthetics. The track has also been specially designed to complement the latest generation of running shoes.

“For the track, we only see the aesthetics, but there is great work that goes into the underlayer,” says Alessandro Piceli, a research and development manager at Mondo, to the Guardian’s Sean Ingle.

Mondo leaders say the Paris track will be 2 percent faster than the one used in Tokyo, per the BBC. But, in 2020, runners also got a boost from hot temperatures and new shoe spike technology, per the Guardian. It remains to be seen how the track will affect athletes’ times, but its creators are confident we will see records fall in Paris.

“The athletes will find this track to be more reactive and better suited for their competition,” said Maurizio Stroppiana, vice president of Mondo’s sport division, to the AP’s Andrew Dampf and Luca Bruno in March.

[fungidaughter]

I'm back.

I was russula-nongrata

(and before that url, amorphous-calcium-carbonate)

Photo is an excerpt from the painting, Mimetismo (Mimicry) by Remedios Varo aka María de los Remedios Alicia Rodriga Varo y Uranga, which I took a picture of in person. Whole painting can be seen here: https://www.wikiart.org/en/remedios-varo/mimicry

More about what happened to my old blog below the 'keep reading'.

It seems a glitch has made it so that I can login and see my dash, and my original blog listed, but cannot see my blog itself or its follows, following, asks, or archive. If you try to view it as in russula-nongrata.tumblr.com, it acts as though it is deleted. Within my dashboard on that account, my own likes are sometimes accessible, sometimes not.

I can make a secondary blog (which I then did, russulanongrata) and use that as normal - with its archive, drafts, queue, ask box and messages and capacity to reblog intact. However it is limited due to being a secondary blog. My likes still are unreachable (by me) and unseen (by everyone else), I can't reply to posts, send asks under my name, and if I follow someone it isn't seen and occasionally does not seem to work. So I am back with a new main blog and will discontinue using the glitched account, but won't delete it. I will archive the secondary blog, 'russulanongrata' to keep the original posts I made there while copying them over here.

The details in this post are hopefully useful if it has affected anyone else. Also I still would like advice on how to fix it and get my original blog back. Support has been nonresponsive so far, for over two months. There are posts I made there of my nature photos in particular that I would like to regain access to.

It's time to move to this new account though, even if I regain access to the old one my plan is to use that access to copy key things over, go through the DMs, and then have it as an archive I can link to.

[helmetkeeper]

Howdy Soldier! RED Engineer here! Can I get some neopronouns based on cogs, gears, and other mechanical stuff? Thanks a ton!

hello, engie!! apologies for the wait, but hopefully you're having a good new year so far! i tried to go more for steampunk-y stuff instead of webcore or scenecore related pronouns, but feel free to send another request in!

your pronouns are under the cut! they're in alphabetical order instead of any other groups because i accidentally got a bit caught up and there's a lot 😅.

(a)symmetric/(a)symmetric's

(a)symmetrical/(a)symmetricals

(a)symmetry/(a)symmetry's

(mac / mak)/(macs / maks)

(mach / match)/(maches / matches)

ab/stract(s)

abstract/abstracts

adapt/adapter

adapt/adapts

adapter/adapters

al/kali

alkali/alkaline

alloy/alloys

aluminum/aluminums

an/ans

analysis/analysis

analysis/analyze

angle/angles

angular/angular(s)

anvil/anvils

ar/mor

armor/armors

atom/atomic(s)

atom/atoms

atomic/atomics

auto/autos

ax/axes, axe/axes

axial/axials

axle/axles

bar/barium

bar/barrel

bar/bars

barium/barium

barrel/barrels

bear/barrel

bearing/bearings

belt/belts

beryllium/beryllium

bev/bevs

bevel/bevels

bio/bios

bis/muth

bismuth/bismuth

blade/blades

blank/blanks

bolt/bolts

bon/bons

bone/bones

brace/braces

brass/brass(es?)

broad/broads

bronze/bronzes

bunsen/bunsens

bunsen/burner(s)

burn/burns

burner/burners

button/buttons

buzz/buzzes

buzz/buzzing

cal/caliber

cal/cals

cal/cium

calcium/calcium

caliber/calibers

can/cans

can/teen(s)

canister/canisters

canteen/canteens

cap/sule(s)

capsule/capsules

car/bon(s)

car/cars

carbon/carbons

cask/casket

cask/casks

ceramic/ceramics

chasm/chasms

chem/chems

chi/chisel(s)

chime/chimes

chisel/chisels

chrom/chrom(s)

chrome/chrome(s)

chromium/chromium

clack/clacks

cleave/cleaver(s)

cleave/cleaves

cleave/cloves

cleaver/cleavers

click/clack(s)

click/clicks

cling/clang

co/balts

co/copper

cobalt/cobalts

cog/cogs

com/press(es)

comp/comps

compress/compressor(s)

compress/conpresses

compressor/compressors

computer/computers

con/cons

condition/conditions

config/configure

configure/configures

contract/contracts

convert/converter

convert/converts

converter/converters

copper/copper(s)

core/cores

cpu/cpu's

craft/crafted

craft/crafter

craft/crafts

crafted/crafter

cre/crest

crest/crests

crown/crowns

crys/tal

crystal/crystals

cut/cuts

cylinder/cylinders

de/fect

de/form(s)

de/tach(es)

deadlock/deadlocks

decor/decor(s)

decor/decoration

decoration/decorations

defect/defects

deform/deformation

deform/deforms

deformation/deformations

detach/detaches

detachable/detachables

dev/device

dev/devs

device/devices

dia/mond

diamond/diamonds

dice/slices

diffract/diffraction

diffract/diffracts

diffraction/diffractions

ding/dings

div/divs

dron/drons

duel/duels

e/en

ech/echs

edge/edges

electron/electrons

em/emblem

emblem/emblems

en/engrave

en/ens

en/grave

eng/eng('s)

engine/engines

engrave/engraved

et/ets

etch/etched

etch/etches

etched/etched(s)

ex/exes

ex/experiment

ex/tension

ex/ternal(s)

exp/exp's

experiment/experiments

extension/extended

extension/extensions

external/externals

face/faces

fasten/fastens

fig/figs

figure/figures

fluctuate/fluctuates

flux/fluxes

fold/folds

folded/folded(s)

forge/forges

form/forms

fragment/fragments

gear/gears

gem/gems

gemstone/gemstones

gild/gilds

gin/gins

glass/glasses

glisten/glistens

glitch/glitches

glow/glows

goggle/goggles

gold/golds

gun/guns

hammer/hammers

handle/handles

hardware/handwares

heli/cal(s)

helical/helicals

helix/helixes

helm/helms

herring/herrings

herringbone/herringbones

hide/hides

hilt/hilts

hook/hooks

horizantal/horizantals

horizon/horizons

hum/humming

hum/hums

hy/dron(s)

hy/hys

hydron/hydrons

hypoid/hypoids

in/ins

in/out

in/tact

in/ter(s)

in/ternal(s)

info/infos

install/installs

intact/intacts

inter/sect(s)

inter/twine

internal/internals

intersect/intersects

intertwine/intertwines

intricate/intricates

ion/ionic

ion/ions

ionic/ionic(s)

iron/irons

ivory/ivory(s)

jab/jabs

jag/jagged

jag/jags

jagged/jaggeds

jewel/jewels

key/keys

lab/labs

lea/ther

lead/leads

leather/leathers

length/lengthens

lev/lever

line/lines

lined/lined(s)

lining/linings

lithi/lithium

lithium/lithium

lo/cate

lo/locate

locate/locates

lock/locks

ma/son

mace/maces

machine/machines

mag/magne

mag/magnesium

mag/mags

mag/nesium(s)

magnesium/magnesium(s)

magnet/magnets

manganese/manganese

mantle/mantles

manu/facture(d / s)

manufact/manufacture(d / s)

manufacture/manufactures

mar/gins

mar/mars

margin/margins

mark/marks

marking/marking(s)

mason/mason(s)

mat/material(s)

material/materials

mech/mechanism

mechanism/mechanism

mercury/mercury(s)

mesh/meshes

metal/metals

metal/work(s)

metalwork/metalworks

meter/meters

metric/metrics

mi/tar(s)

mitar/mitars

modifier/modifiers

modify/modifier(s)

modify/modifies

module/modules

mount/mounts

nail/nails

net/nets

nick/el(s)

nickel/nickels

nova/novas

nuclear/nuclears

null/nulls

nut/nuts

ob/sidian

obelisk/obelisks

obsidian/obsidian(s)

or/nate(s)

ornate/ornates

out/outs

para/llel(s)

para/paras

parallel/parallels

per/pers

phy/phys

physic/physics

pin/pins

pinion/pinions

pipe/pipeline(s)

pipe/pipes

pipeline/pipelines

piston/pistons

pitch/pitches

pix/pixels

pixel/pixels

plas/ma

plasma/plasmas

plat/platinum

plate/plates

platinum/platinum

plu/to

pluto/nium

pluto/plutonium

plutonium/plutonium

po/po

point/points

pole/poles

polish/polished

polish/polishes

polished/polishes

potassium/potassium

pre/cise

precise/precise(s)

precise/precision

precision/precision(s)

press/presses

pressure/pressures

produce/producer

produce/produces

producer/producers

punk/punks

qual/quality

qualification/qualifications

quality/qualification

quality/qualities

rad/radium

rad/rads

radio/radios

radium/radium

ratch/et(s)

ratchet/ratchets

razor/razors

re/ceiver

re/volve

reactor/reactors

receive/receiving

receiver/receives

rein/force

reinforce/reinforced

reinforce/reinforcement

reinforce/reinforces

reinforcement/reinforcements

reinstall/reinstalls

research/researches

revolve/revolves

revolver/revolver

ring/ding(s)

ring/rings

ro/round

ro/tary

ro/tate(s)

ro/tation(s)

rod/rods

rotary/rotary's

rotate/rotates

rotation/rotations

rough/roughs

round/rounds

rug/rugged

rugged/ruggeds

rust/rustic

rust/rusts

rustic/rustic(s)

saph/(f)ire

sapph/(f)ire

sapphire/sapphires

screw/screws

search/searches

sec/secs

sect/sects

secure/secures

sharp/sharps

sheet/sheets

shine/shines

shiny/shines

sil/sils

sil/ver

silver/silvers

slab/slabs

slat/slats

slate/slates

slice/dice(s)

slice/slices

sodium/sodium

software/softwares

sol/sols

spiral/spirals

spire/spires

sprig/sprig

spur/spurs

stab/jab(s)

stab/stabs

stan/standard

stat/stats

statistic/statistics

ste/sten

steam/steampunk

steam/steams

steampunk/steampunks

steel/steels

stock/stocks

stone/stones

stron/tium

strontium/strontium

study/studies

tack/tacks

tact/tacts

tan/tans

tangle/tangled

tangle/tangles

tar/tars

tech/techs

techno/technos

tension/tensions

ter/ters

test/tests

ti/titanium(s)

tin/tins

titanium/titaniums

tra/ject(s)

trajectory/trajectories

trigger/triggers

tu/tungsten

tungsten/tungstens

turn/turns

twine/twines

twist/turn(s)

twist/twists

un/un's

unknow/unknown(s)

unknown/unknown(s)

uranium/uranium

ver/vers

vert/vertical

vertical/verticals

vil/vils

volt(s)/voltage

volt/volts

voltage/voltages

volve/volves

warn/warning

warn/warns

warning/warnings

warp/warped

warped/warped(s)

watt/watts

weigh/weighs

weight/weights or wait/waits

whack/whacks

wheel/wheels

whir/whirring

whir/whirs

wield/wields

wire/wireless

wire/wires

wireless/wireless(es?)

wood/woods

work/works

workshop/workshops

wrench/wrenches

zinc/zincs

zir/con(s)

zir/conium(s)

zir/zirs

zirconium/zirconiums

[traveliv13]

Pammukale, Turkey

(fr) Pamukkale est une tufière entièrement élaborée par les eaux chaudes qui s'écoulent des entrailles de la montagne. Le site comporte 17 sources. Située au sud-ouest de la Turquie, certaines d'entre elles ont une température de plus de 45 °C, et sont saturées de sels minéraux et de gaz carbonique. Ce dioxyde de carbone, en se libérant dans l'air, fait précipiter le carbonate de calcium contenu dans l'eau, lequel se dépose, sous forme pâteuse, sur les flancs de la colline et durcit ensuite lors de l'évaporation de l'eau. Chaque litre d'eau délivre un demi-gramme de carbonate et de calcium.

(en) Pamukkale is a tufa formed entirely by the hot waters which flow from the bowels of the mountain. The site has 17 sources. Located in the southwest of Turkey, some of them have a temperature of more than 45°C, and are saturated with mineral salts and carbon dioxide. This carbon dioxide, by being released into the air, precipitates the calcium carbonate contained in the water, which is deposited, in pasty form, on the sides of the hill and then hardens during the evaporation of the water. Each liter of water delivers half a gram of carbonate and calcium. ​

[ondessiderales]

Du calcium dans nos os, du fer dans nos veines

Du carbone dans nos âmes, de l'azote dans notre être

93% de poussières d'étoiles dans nos âmes nées dans les flammes

Nous sommes juste des étoiles qui portent le nom d'hommes

[quotesfrommyreading]

Until the early nineteenth century few tools existed to detect a toxic substance in a corpse. Sometimes investigators deduced poison from the violent sickness that preceded death, or built a case by feeding animals a victim's last meal, but more often than not poisoners walked free. As a result murder by poison flourished. It became so common in eliminating perceived difficulties, such as a wealthy parent who stayed alive too long, that the French nicknamed the metallic element arsenic poudre de succession, the inheritance powder.

The chemical revolution of the 1880s changed the relative ease of such killings. Scientists learned to isolate and identify the basic elements and the chemical compounds that define life on Earth, gradually building a catalog, The Periodic Table of the Elements. In 1804, the elements palladium, cerium, iridium, osmium, and rhodium were discovered; potassium and sodium were isolated in 1807; barium, calcium, magnesium, and strontium in 1808; chlorine in 1810. Once researchers understood individual elements they went on to study them in combination, examining how elements bonded to create exotic compounds and familiar substances, such as the sodium-chlorine combination that creates basic table salt (NaCl).

The pioneering scientists who worked in elemental chemistry weren't thinking about poison in particular. But others were. In 1814, in the middle of this blaze of discovery, the Spanish chemist Mathieu Orfila published a treatise on poisons and their detection, the first book of its kind. Orfila suspected that metallic poisons like arsenic might be the easiest to detect in the body's tissues and pushed his research in that direction. By the late 1830s the first test for isolating arsenic had been developed. Within a decade more reliable tests had been devised and were being used successfully in criminal prosecutions.

But the very science that made it possible to identify the old poisons, like arsenic, also made available a lethal array of new ones. Morphine was isolated in 1804, the same year that palladium was discovered. In 1819 strychnine was extracted from the seeds of the Asian vomit button tree (Strychnos nux vomica). The lethal compound coniine was isolated from hemlock the same year. Chemists neatly extracted nicotine from tobacco leaves in 1828. Aconitine – described by one toxicologist as “in its pure state, perhaps the most potent poison known” – was found in the beautifully flowering monkshood plant in 1832.

And although researchers had learned to isolate these alkaloids – organic (carbon-based) compounds with some nitrogen mixed in – they had no idea how to find such poisons in human tissue. Orfila himself, conducting one failed attempt after another, worried that it was an impossible task. One exasperated French prosecutor, during a mid-nineteenth-century trial involving a morphine murder, exclaimed: “Henceforth let us tell would-be poisoners; do not use metallic poisons for they leave traces. Use plant poisons...Fear nothing; your crime will go unpunished. There is no corpus delecti [physical evidence] for it cannot be found.”

So began a deadly cat and mouse game – scientists and poisoners as intellectual adversaries. A gun may be fired in a flash of anger, a rock carelessly hurled, a shovel swung in sudden fury, but a homicidal poisoning requires a calculating intelligence. Unsurprisingly, then, when metallic poisons, such as arsenic, became detectable in bodies, informed killers turned away from them. A survey of poison prosecutions in Britain found that, by the mid-nineteenth century, arsenic killings were decreasing. The trickier plant alkaloids were by then more popular among murderers.

In response, scientists increased their efforts to capture alkaloids in human tissue. Finally, in 1860, a reclusive and single-minded French chemist, Jean Servais Stas, figured out how to isolate nicotine, an alkaloid of the tobacco plant, from a corpse. Other plant poisons soon became more accessible and chemists were able to offer new assistance to criminal investigations. The field of toxicology was becoming something to be reckoned with, especially in Europe.

The knowledge, and the scientific determination, spread across the Atlantic to the United States. The 1896 book Medical Jurisprudence, Forensic Medicine and Toxicology, cowritten by a New York research chemist and a law professor, documented the still-fierce competition between scientists and killers. In one remarkable case in New York, a physician had killed his wife with morphine and then put belladonna drops in her eyes to counter the telltale contractions of her pupils. He was conviced only after Columbia University chemist Rudolph Witthaus, one of the authors of the 1896 text, demonstrated the process to the jury by killing a cat in the courtroom using the same gruesome technique. There was as much showmanship as science, Witthaus admitted; toxicology remained a primitive field of research filled with “questions still unanswerable”.

  —  The Poisoner's Handbook: Murder and the Birth of Forensic Medicine in Jazz Age New York (Deborah Blum)

[mapeidubai]

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CE-certified product in compliance with EN 1504-2 and EN 14891 standards.

Excellent elongation at failure (120%).

Excellent mechanical characteristics thanks to the use of Mapetex Sel reinforcement.

Fluid consistency for easy application.

Resistant to UV rays.

May also be applied on existing wall and floor coverings.

Compatible with ceramic, mosaic and natural stone wall and floor coverings.

[mouldinginjections]

Les Pommeaux de Douche : Une Expérience de Douche Révolutionnaire

Introduction

L'importance de la douche dans notre quotidien ne peut être sous-estimée. Au-delà de sa fonction hygiénique, elle est souvent un moment de détente et de relaxation. Dans cette perspective, le choix du pommeau de douche joue un rôle crucial pour optimiser l'expérience. Parmi les options disponibles, les pommeaux de douche anti-calcaire se distinguent par leurs avantages significatifs. Cet article explore les caractéristiques, les avantages et l'impact des pommeaux de douche, avec un accent particulier sur les modèles anti-calcaire.

Qu'est-ce qu'un Pommeau de Douche ?

Un pommeau de douche est l'élément terminal de la douche qui disperse l'eau en jets. Il existe une variété de modèles, allant des plus simples aux plus sophistiqués, intégrant des fonctionnalités comme les multiples modes de jets, les LED pour l'éclairage d'ambiance, et les filtres intégrés.

Les différents types de pommeaux de douche

Pommeaux de douche classiques : Ils offrent un débit standard avec un seul type de jet.

Pommeaux de douche multi-jets : Ils permettent de choisir entre plusieurs types de jets, comme le jet pluie, le jet massant, ou le jet doux.

Pommeaux de douche économiques : Conçus pour réduire la consommation d'eau sans compromettre la pression.

Pommeaux de douche avec LED : Ces modèles ajoutent une touche esthétique avec des lumières LED changeant de couleur en fonction de la température de l'eau.

Pommeaux de douche anti-calcaire : Dotés de filtres ou de picots en silicone pour prévenir l'accumulation de calcaire.

L'Importance des Pommeaux de Douche Anti-Calcaire

Le calcaire, composé principalement de carbonate de calcium, est un problème courant dans les régions où l'eau est dure. Il peut obstruer les conduites d'eau et réduire l'efficacité des appareils sanitaires.

Pourquoi choisir un pommeau de douche anti-calcaire ?

Durabilité accrue : Les pommeaux de douche anti-calcaire sont conçus pour résister à l'accumulation de dépôts minéraux, prolongeant ainsi leur durée de vie.

Performance maintenue : En empêchant l'obstruction des buses, ces pommeaux assurent un débit d'eau constant et efficace.

Facilité d'entretien : Beaucoup de modèles sont équipés de picots en silicone qui facilitent le nettoyage en permettant de retirer facilement les dépôts de calcaire.

Amélioration de l'hygiène : Le calcaire peut abriter des bactéries. Un pommeau anti-calcaire contribue à une meilleure hygiène de l'eau.

Esthétique préservée : Un pommeau de douche sans dépôts de calcaire conserve un aspect propre et attrayant plus longtemps.

Comment Fonctionnent les Pommeaux de Douche Anti-Calcaire ?

Les pommeaux de douche anti-calcaire utilisent plusieurs techniques pour prévenir l'accumulation de calcaire :

Picots en silicone : Les buses en silicone permettent de retirer facilement les dépôts de calcaire en les frottant avec les doigts.

Filtres intégrés : Certains modèles intègrent des filtres qui capturent les minéraux avant qu'ils n'atteignent les buses.

Matériaux spécifiques : Utilisation de matériaux résistants au calcaire comme l'acier inoxydable ou certains plastiques spécifiques.

Technologies ionisantes : Quelques modèles utilisent des technologies ionisantes pour neutraliser les minéraux dans l'eau.

Les Avantages Concrets des Pommeaux de Douche Anti-Calcaire

Pour les Utilisateurs

Confort de douche amélioré : Un jet constant et puissant offre une expérience de douche agréable.

Peau et cheveux plus sains : L'eau douce réduit les irritations de la peau et rend les cheveux plus soyeux.

Économie d'eau et d'énergie : Un débit d'eau optimal signifie moins de temps passé sous la douche, réduisant ainsi la consommation d'eau et d'énergie.

Pour les Installations Sanitaires

Réduction de l'entretien : Moins de calcaire signifie moins de besoin de produits de nettoyage et d'entretien.

Longévité des équipements : Les pommeaux douche et les autres équipements de salle de bain durent plus longtemps sans l'usure causée par le calcaire.

Choisir le Bon Pommeau de Douche Anti-Calcaire

Lors de la sélection d'un pommeau de douche anti-calcaire, plusieurs critères doivent être pris en compte :

Compatibilité : Assurez-vous que le modèle est compatible avec votre installation de douche existante.

Modes de jet : Choisissez un modèle qui offre les types de jets que vous préférez.

Facilité d'entretien : Optez pour des modèles avec des buses en silicone pour un nettoyage facile.

Technologie de filtration : Si vous avez une eau très dure, un modèle avec une technologie de filtration avancée peut être bénéfique.

Esthétique : Le design du pommeau de douche doit s'harmoniser avec le style de votre salle de bain.

Conclusion

Les pommeaux de douche, et plus particulièrement les pommeaux de douche anti-calcaire, représentent une avancée significative dans le confort et la praticité des douches modernes. En investissant dans un modèle de qualité, vous assurez non seulement une expérience de douche supérieure, mais vous contribuez également à la longévité de vos équipements sanitaires. Pour ceux qui cherchent à optimiser leur quotidien tout en minimisant l'entretien, un pommeau de douche anti-calcaire est un choix judicieux.

Invitation à l'Action

Pour découvrir une gamme complète de pommeaux de douche, y compris les modèles anti-calcaire, visitez notre site web mouldinginjection.com. Nous proposons des produits de haute qualité qui répondent aux besoins variés de nos clients, garantissant une satisfaction totale et une expérience de douche incomparable.

[racout]

Trad. FR :

Coupe post-mortem d’un fémur atteint de perles d’os, aussi appelées ostéoperlomes.

Bien qu’elles soient d’abord inoffensives, ces étincelantes tumeurs bénignes peuvent mener à d’importantes fractures. Malgré cela, les perles d’os ont été prisées durant toute l’Histoire, menant certains à provoquer leur formation pour les récolter plus tard.

Les perles d’os sont généralement produites en injectant des petites impuretés de carbonate de calcium dans le système sanguin. Ils s’incrustent dans le tissu osseux et provoquent la croissance d’ostéoblastes anormaux, qui vont former des ostéoperlomes.

On peut aussi les créer grâce à la chirurgie pour obtenir des perles de la forme désirée.

Postmortem cross-section of a femur affected with bone pearls, also known as osteoperlomas.

While initially harmless, these shimmering benign tumors can lead to major fractures. Despite this, bone pearls have been prized throughout history, leading some to induce their formation for later harvesting.

Bone pearls are usually induced by injecting small calcium carbonate impurities into the bloodstream. They become embedded in the bone tissue and cause abnormal osteoblast growth, leading to osteoperlomas.

Surgical induction may also be performed to obtain pearls of the desired shapes.

[dreamersdiary11]

"There is a fundamental reason why we look at the sky with wonder and longing-for the same reason that we stand, hour after hour, gazing at the distant swell of the open ocean. There is something like an ancient wisdom, encoded and tucked away in our DNA, that knows its point of origin as surely as a salmon knows its creek. Intellectually, we may not want to return there, but the genes know, and long for their origins-their home in the salty depths. But if the seas are our immediate source, the penultimate source is certainly the heavens... The spectacular truth is-and this is something that your DNA has known all along— the very atoms of your body-the iron, calcium, phosphorus, carbon, nitrogen, oxygen, and on and on —were initially forged in long-dead stars. This is why, when you stand outside under a moonless, country sky, you feel some ineffable tugging at your innards. We are star stuff. Keep looking up."

Neil de Grasse Tyson (via diluvie)

[chemanalystdata]

Calcium Chloride Prices | Pricing | Trend | News | Database | Chart | Forecast

 Calcium Chloride Prices a versatile chemical compound used in various industries, has experienced fluctuating prices due to several market factors. This compound, with the formula CaCl2, finds applications in fields such as de-icing, dust control, and as an additive in food and pharmaceuticals. The cost of calcium chloride can vary significantly based on the demand from these industries, the availability of raw materials, energy costs, and transportation logistics. The dynamic nature of the global market has had a considerable impact on calcium chloride prices over the years, and understanding these fluctuations requires a closer examination of the supply and demand factors.

One of the primary drivers of calcium chloride prices is its usage in de-icing during winter months, particularly in regions with harsh weather conditions. When winter seasons are more severe than anticipated, the demand for de-icing agents, including calcium chloride, spikes. This increased demand often leads to a rise in prices, as suppliers scramble to meet the needs of municipalities and private companies tasked with keeping roads and walkways safe. In contrast, milder winters can lead to lower demand, resulting in a drop in prices. This seasonal volatility is a crucial aspect of calcium chloride's price trends, especially in North America and Europe, where winter weather is a significant factor.

Another major factor influencing the price of calcium chloride is the availability of raw materials. Calcium chloride is primarily produced as a byproduct of the Solvay process, which also yields sodium carbonate (soda ash). Any disruptions in the production of soda ash, whether due to supply chain issues, raw material shortages, or operational challenges at production plants, can impact the availability of calcium chloride. When supply is constrained, prices tend to rise as the limited product on the market commands a higher premium. Conversely, when supply is plentiful, prices may decrease as producers seek to maintain competitive market positions.

Get Real Time Prices for Calcium Chloride: https://www.chemanalyst.com/Pricing-data/calcium-chloride-1297

Energy costs also play a significant role in the pricing of calcium chloride. The production process of calcium chloride is energy-intensive, particularly in its anhydrous form. Fluctuations in the cost of energy, such as electricity and natural gas, can directly impact production costs, which in turn influence the final price of the product. For instance, when energy prices surge due to geopolitical tensions, supply constraints, or regulatory changes, the cost of producing calcium chloride can rise, leading manufacturers to pass these costs onto consumers. Conversely, when energy prices fall, there may be some relief in the cost of calcium chloride, although this effect is not always immediate.

Transportation costs are another key element affecting calcium chloride prices, particularly for bulk shipments. As a chemical product often used in large quantities for industrial purposes, calcium chloride needs to be transported efficiently to various markets. The cost of shipping, whether by land, sea, or rail, can vary depending on fuel prices, labor costs, and infrastructure issues. Increases in fuel prices can significantly raise the overall cost of transporting calcium chloride, contributing to higher prices for end users. Similarly, disruptions in transportation networks, such as port congestion or rail strikes, can create bottlenecks in the supply chain, leading to increased costs and delays in delivery. These logistical challenges add to the price fluctuations seen in the calcium chloride market.

The global demand for calcium chloride has also expanded due to its increasing use in various industries beyond de-icing and dust control. In the food industry, calcium chloride is used as a firming agent for canned vegetables and as an electrolyte in sports drinks. Its application in the pharmaceutical industry, particularly in the treatment of hypocalcemia, has further increased its demand. The rising need for calcium chloride in these sectors has contributed to a steady demand, although the degree of impact on pricing depends on the volume of calcium chloride required for these applications compared to industrial uses.

Geopolitical events and trade policies also have the potential to affect calcium chloride prices. Tariffs, trade restrictions, and political instability in key producing regions can disrupt the global supply chain, leading to shortages or surpluses that affect pricing. For example, tariffs on chemical products between major trading partners such as the United States and China can lead to increased costs for importers, which are often passed down to consumers in the form of higher prices. Similarly, political instability in regions where raw materials are sourced or where calcium chloride production facilities are located can cause uncertainty in the market, leading to price volatility.

Environmental regulations are another consideration that can influence calcium chloride prices. As governments around the world tighten regulations on industrial emissions and chemical production, manufacturers of calcium chloride may face increased costs related to compliance. Whether through the implementation of cleaner production technologies or the need to pay for emissions permits, these regulatory costs can add to the overall production expenses. In turn, this may result in higher prices for calcium chloride, particularly if manufacturers are unable to absorb these additional costs within their current pricing structures.

Market competition among calcium chloride producers is another factor that influences prices. The presence of multiple producers in the market often leads to competitive pricing as companies vie for market share. However, consolidation within the industry, such as mergers and acquisitions, can reduce competition, leading to higher prices. Larger companies with greater control over production and distribution may be able to set prices at higher levels, especially if they hold a dominant position in the market. This is particularly evident in regions where a few key players control the majority of the calcium chloride supply, limiting price competition.

The calcium chloride market is also influenced by long-term economic trends. Economic growth or contraction in key regions can impact the demand for calcium chloride, particularly in construction and manufacturing. For instance, in periods of economic expansion, construction projects and industrial activities increase, driving demand for calcium chloride for purposes such as concrete acceleration and dust control on construction sites. Conversely, during economic downturns, these activities slow down, leading to reduced demand and potentially lower prices.

Get Real Time Prices for Calcium Chloride: https://www.chemanalyst.com/Pricing-data/calcium-chloride-1297

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[annexechem]

The Complete Guide to Sodium Chloride: Uses, Myths, and Health Implications

Did you know that the average human body contains about 250 grams of sodium chloride, roughly the same amount as a box of table salt? This simple yet essential compound, commonly known as salt, is a cornerstone of human civilization, playing a critical role in everything from culinary delights to industrial processes. Whether sprinkled on your dinner or used to melt icy roads, sodium chloride is more than just a seasoning – it’s a fundamental element of life as we know it.

What is Sodium Chloride?

Sodium chloride is a chemical compound with the formula NaCl, consisting of one sodium (Na) ion and one chloride (Cl) ion. It is an ionic compound, meaning it is formed by the electrostatic attraction between positively charged sodium ions and negatively charged chloride ions. This crystalline structure gives sodium chloride its characteristic solid, granular appearance and makes it highly soluble in water.

Historical Background and Discovery

Sodium chloride has a rich history that dates back to ancient civilizations. Its significance is evident in its historical role as a valuable trade commodity and a critical preservative.

Ancient Civilizations: Egyptians used salt for preservation by 6,000 BC. The Chinese documented salt production by 2,700 BC. Romans paid soldiers with salt, coining “salary.”

Medieval Period: In the Middle Ages, salt influenced trade and economics, with Venice gaining power through its control.

Modern Discovery: In the 19th century, Sir Humphry Davy confirmed sodium chloride’s composition using electrolysis.

Sodium chloride’s journey from a precious ancient commodity to an everyday kitchen staple underscores its enduring importance and versatility. As we continue to explore its uses and benefits, it’s clear that this humble compound is much more than just a seasoning – it’s a fundamental building block of our world.

Uses of Sodium Chloride

Sodium chloride, or common table salt, is a versatile compound with a wide range of applications in culinary, industrial, and medical fields. Let’s explore the various ways in which this essential substance is utilized.

Culinary Uses of Sodium Chloride

Table Salt and Its Varieties: Sodium chloride is commonly recognized as table salt, an essential seasoning in kitchens worldwide. Various types of salt are available, each with unique characteristics:

Table Salt: Refined and often iodized, making it suitable for everyday use.

Kosher Salt: Coarse-grained and free of additives, preferred in professional kitchens.

Sea Salt: Harvested from evaporated seawater, often less processed and containing trace minerals.

Himalayan Pink Salt: Mined from ancient sea beds, known for its distinctive pink color and mineral content.

Importance of Sodium Chloride in Cooking and Baking 

Salt plays a crucial role in cooking and baking:

Flavor Enhancement: Salt enhances the natural flavors of food, making dishes more palatable.

Preservation: Historically used to preserve meats and vegetables, salt inhibits the growth of bacteria.

Baking: In baking, salt regulates yeast fermentation, strengthens gluten, and enhances texture and flavor.

Brining: Brining meat in a salt solution helps retain moisture and improves tenderness.

Industrial Uses of Sodium Chloride

Chemical Industry

Sodium chloride is a fundamental raw material in the chemical industry:

Chlorine and Sodium Hydroxide Production: Through electrolysis, sodium chloride is separated into chlorine gas and sodium hydroxide (caustic soda), essential for manufacturing plastics, paper, detergents, and more.

Soda Ash Production: Used in the production of sodium carbonate, crucial for glass, soap, and paper industries.

Water Softening

In water softening systems, sodium chloride regenerates ion exchange resins:

Ion Exchange Process: Sodium ions replace calcium and magnesium ions in hard water, preventing scale buildup in pipes and appliances, and improving soap efficiency.

De-icing Roads

Sodium chloride is extensively used for de-icing and preventing icy roads:

Melting Ice: Salt lowers the freezing point of water, effectively melting ice and snow on roadways.

Safety: Ensures safer driving conditions during winter, reducing the risk of accidents.

Health and Medical Uses of Sodium Chloride

Electrolyte Balance in the Body

Sodium chloride is vital for maintaining proper bodily functions:

Hydration: Sodium and chloride ions help regulate fluid balance, nerve function, and muscle contractions.

Electrolyte Solutions: Sports drinks and oral rehydration solutions contain sodium chloride to restore electrolytes lost through sweat and dehydration.

Medical Treatments

Sodium chloride solutions are essential in medical treatments:

Saline Solutions: Used for intravenous infusions to rehydrate patients, deliver medications, and maintain blood pressure during surgery.

Wound Care: Saline is used to clean wounds and prevent infections.

Nasal Irrigation: Saline nasal sprays relieve nasal congestion and sinus issues.

Sodium chloride’s versatility and essential properties make it indispensable in daily life, from enhancing our meals to supporting industrial processes and medical treatments. Understanding its diverse uses highlights the importance of this seemingly simple compound in maintaining modern society’s functionality and health.

Health Implications of Sodium Chloride

Sodium chloride, while essential for bodily functions, must be consumed in appropriate amounts to avoid health risks. This section explores the dietary role of sodium chloride, its sources, potential health risks, and benefits.

Sodium Chloride in Diet

Health organizations provide guidelines on the recommended daily intake of sodium:

Adults: The World Health Organization (WHO) recommends an intake of less than 2,000 mg of sodium per day, roughly equivalent to 5 grams (about one teaspoon) of salt.

Children: The recommended intake for children varies by age, generally lower than for adults to match their dietary needs and body size.

Sources in Food

Sodium chloride is present in various foods, both naturally and through processing:

Natural Sources: Vegetables, dairy products, and meats contain natural sodium, though in relatively low amounts.

Processed Foods: A significant source of dietary sodium comes from processed and packaged foods such as:

Canned soups and vegetables: Often high in added salt for preservation and flavor.

Snack foods: Chips, crackers, and pretzels are typically high in sodium.

Prepared meals: Frozen dinners, pizzas, and fast foods contain substantial amounts of added salt.

Condiments: Soy sauce, ketchup, and salad dressings are common high-sodium culprits.

Health Risks of Excess Sodium

High Blood Pressure (Hypertension):

Mechanism: High sodium levels cause the body to retain water, increasing blood volume and pressure on blood vessel walls.

Prevalence: Hypertension affects millions globally and is a significant risk factor for heart disease and stroke.

Cardiovascular Diseases: 

Heart Disease: Elevated blood pressure strains the heart, leading to conditions such as heart attacks and heart failure.

Stroke: Increased pressure and damage to blood vessels heighten the risk of strokes.

Health Benefits- Necessary for Bodily Functions

Sodium chloride is crucial for various physiological functions:

Electrolyte Balance: Maintains proper fluid balance within cells and blood vessels.

Nerve Function: Essential for transmitting nerve impulses.

Muscle Contraction: Helps muscles contract and relax, including the heart muscle.

Prevention of Iodine Deficiency

Iodine Supplementation: Iodine is an essential mineral for thyroid function and hormone production.

Deficiency Prevention: Iodized salt prevents iodine deficiency disorders such as goiter and hypothyroidism, particularly in regions where natural iodine levels in food and water are low.

Sodium chloride, while essential in moderation, poses health risks when consumed excessively. Understanding its sources in our diet and adhering to recommended intake guidelines can help mitigate these risks. Moreover, iodized salt remains a crucial public health measure to prevent iodine deficiency. Balancing sodium chloride intake is key to maintaining good health and preventing chronic diseases.

Interesting Facts and Myths of Sodium Chloride

Sodium chloride, or table salt, is surrounded by various myths and fascinating facts that highlight its unique characteristics and multifaceted uses. Let’s explore some common misconceptions and uncover intriguing details about this ubiquitous compound.

Myth 1: Sea Salt is Healthier than Table Salt

Debunked: Despite popular belief, sea salt, and table salt contain similar amounts of sodium by weight. The main difference lies in their texture and trace minerals. While sea salt may contain small amounts of minerals like magnesium and calcium, these differences are not significant enough to impact health substantially. The key is moderation in consumption, regardless of the type.

Myth 2: Cutting Out Salt Completely is Beneficial

Debunked: Sodium is an essential nutrient required for vital bodily functions, including nerve impulse transmission, muscle contraction, and fluid balance. Eliminating salt can lead to hyponatremia, a dangerous condition caused by low sodium levels. It’s important to reduce excessive intake, not eliminate it.

Myth 3: Only Older Adults Need to Worry About Salt Intake

Debunked: High sodium intake affects people of all ages, not just older adults. Children and adolescents are also at risk of developing hypertension and cardiovascular diseases later in life due to high sodium consumption from processed foods. Everyone should be mindful of their salt intake to maintain long-term health.

Check out the Original Article

[untitledgoosegay]

Deserts feed forests, true, but they are also carbon sinks in their own ways! Ways that are as yet poorly-understood -- but we know that, for example, the roots of mesquite trees can penetrate hundreds of feet deep in search of water. In doing so, they transport carbon deep underground, where it reacts with calcium to form caliche, deposits of calcium carbonate. In this mineral form it can remain buried practically indefinitely -- in contrast to the biological carbon sinks of forests, which cycle carbon back into the atmosphere on a much shorter (though still long) time-frame. When desert plants convert atmospheric carbon into sugars, that carbon too is buried in dense reserves among the symbiotic fungal networks of their roots; this glomalin, while not unique to deserts, stores a full third of the world's soil carbon

But --

Why must deserts serve forests to be worthwhile?

Why must deserts be carbon sinks at all to be valued?

Deserts are beautiful, rich and unique ecosystems, with communities and histories all their own

The fact that they appear sparse, that -- in technical terms -- they have a lower density of biomass than other habitats, does not mean that they are empty of life. The plants and animals of the world's deserts are hardy, clever, and resilient; like tundra and mountains, their communities grow slowly, with many plants growing only fractions of an inch per year, for thousands of years -- damage is catastrophic. Others, and many animals, flourish in the rare moments when water is plenty, erupting into a frenzy of life and activity before retreating to dormancy

Without the camel, or the sidewinder snake, or the hairy scorpion; the African lungfish, and the constellated diversity of Tanganyika cichlids; without the saguaro or the Joshua tree or strange, ancient Welsitschia; the Syntrichia moss that draws water directly from the air; the dense, bulbous Ilareta shrub --

Without the painted mountains of Peru; without the stone forests of Tsingy de Bemahara; without the singing sands of the Namib, and Gobi, and Taklamakan; the high salt flats of the Atacama where flamingoes raise their young --

Our world would be so much poorer.

Over the millennia of human existence countless peoples have made their homes with deserts. On every continent save Antarctica, human cultures and histories have molded & been molded by desert homes; have lived with them, and loved them, and managed them, and been part of them

The camel, llama, and alpaca; the lion, crocodile, and and sacred vulture; even our beloved housecats -- we owe them all to deserts

The pigeon! Our everyday, ubiquitous Columba livia! Heroes of world wars, foundational to the theory of evolution, prized friends and companions (and, yes, livestock) to humanity for five thousand years! Whose ability to find home across hundreds of miles originated (we believe) to bring them back to their cliffside roosts after foraging faraway sources of food and water across the Mediterranean deserts of their origin!

The Nazca lines survive only because their desert environment is dry enough to preserve them; the Pueblo peoples carved homes into cliff faces; Uluru (map by Tony Tjamiwa) is sacred to the Pitjantjatjara people

And the thoughtless colonial erasure -- "greening" -- of these deserts is the genocide of their peoples, packaged as environmentalism, appealing to Euro-centric aesthetics and ideals of "nature." The label of "wasteland" is historically inextricable from genocide -- literally, labelling a land and the people who live there "waste" to discard and obliterate

We see this today in Palestine, where olive groves are razed for pine forests planted over the ruins of Palestinian towns whose people were slaughtered and exiled in the founding of the state of Israel, to hide that they were ever there, that any atrocity was committed -- an ongoing genocide that has continued for some 70 years, a proud slogan upheld by the Israeli occupation! "Making the Desert Bloom" ... in a manner economically productive for European industrial agriculture, fertile on the bodies of Palestine's people, on the eradication of the "empty" "wasteland" the first Zionist settlers "found"

Whether deserts serve as carbon sinks; how they compare as carbon sinks to other habitats; whether they feed forests -- all of these questions are important, true, but none of them matter as to whether deserts are worthwhile. Whether deserts get to exist.

Deserts get to exist because they are alive, and dynamic, and historied. Deserts get to exist because they have been homes for people and cultures since time immemorial. Deserts get to exist because each of them is unique, and to lose any of them would be a tragic, irreparable atrocity

[thanks to @rainbowobsidianbutterfly for talking over thoughts + providing examples]