Simulation d’ensoleillement sur 365 jours par an, permet de voir les opportunités d’économie d’énergie, planifier des améliorations et trouver les zones ensoleillées.
ToitSolaire.ch
Permet de découvrir combien d’électricité et de chaleur votre toit peut produire, sur la base de l’ensoleillement annuel, détaillé par mois. Fonctionne aussi pour les façades. Site officiel suisse, ne couvrant que le territoire national.
Men’s dress shirts come with or without a breast pocket. • Formal shirt – No pocket. • Casual shirts – Why not.
If you’re not going to use it, go without. Remember that shirts with breast pockets are unsuitable for the most formal events.
Placket
Front placket (standard) – the most common type of placket in dress shirts. At 1-2 inches long, the fabric is either folded or attached as a separate piece (with visible stitches on both sides). It’s responsible for the symmetrical look of the front of your shirt.
Covered placket(Concealed or Fly Front) – refers to a concealed shirt placket that has a flap on the front to hide the buttons beneath. This style is most appropriate for formal occasions where a tuxedo is required (since the fly front drives more attention toward the bow tie).
French placket (No placket) – this is an alternative option for those who’d rather sport a plain shirt front. The edge of the front side of the shirt is folded over to form a creased edge (held together by the button holes). This style gives the dress shirt a simpler look and is considered more formal than the standard placket.
Fabric
Fabric Types
Cotton – cotton is the standard by which other shirt fabrics are judged. It’s breathable, looks great and you can wash it over and over again without damaging it. You can also put it through the tumble dryer at a low heat.
Synthetic – synthetic blends are common in men’s dress shirts, sometimes to add elasticity. The problem with synthetics is that they do not stand up to heat well. You need to take care to iron at a low temperature to avoid burning or melting the material. I avoid tumble drying synthetic shirts altogether and allow them to dry naturally. Note that synthetics are also prone to shrinking.
Linen – linen is a lightweight and breathable material which makes it ideal for summer shirts. It’s a material best suited to a casual environment and tends to be more expensive than cotton or synthetic blends because its labor intensive production process.
Fabric Weight
Men’s dress shirts made from heavier fabrics will keep their form longer and are more suitable in cooler climates. Lighter shirts made from materials like Linen will keep you cool in the sun. If you feel uncomfortable in your shirt, it will show – so make sure you pay attention to the fabric weight before making that purchase.
Thread Count
The total number of threads (warp + weft) per square inch of fabric (a “100-thread-count” fabric has 50 vertical (warp) and 50 horizontal (weft) threads per inch).
Higher thread count usually means a finer, smoother, and more luxurious feel (common in premium dress shirts). However, excessively high thread counts (e.g., 200+) can make fabric less breathable. Poplin typically has a high thread count (80–150), while Oxford is lower (60–80) for a more textured feel.
Cotton Count (Yarn Count, Ne) Not to be confused with “thread count” (which is more often used to describe bedding than shirting fabrics), “cotton count” is the measure of how dense the thread is. The number represents the amount of material, measured in 840-yard hanks, needed to equal one pound.
The higher the number the finer the yarn, leading to some rough guidelines: • 1-20 is a low cotton count usually referred to as a “coarse count.” It’s unlikely that you’ll find cloth made from coarse count thread in most custom tailors’ selections. • 20-60 is a common range for single-knit T-shirts and similar lightweight cotton products. Off-the-rack dress shirts will often use threads from this range as well, though usually in double-knit cloths for added weight. The texture is plain and usually has a dull matte finish. • 60-100 is a range of fine count cottons used for quality shirtings and bedsheets. The threads are much lighter and smoother, giving the finished cloth a slightly slippery feel and a bit of a reflective sheen. • 100+ is very fine-spun cotton (usually from long-staple fibers) that makes an extremely light and smooth weave. The threads may be rather delicate because of their fineness, making the shirt less durable than most cotton garments.
Fabric Weave
Poplin (Popeline) – Soft and silky, it’s the most commonly used fabric for shirts. It’s usually made of cotton—but can also be wool or silk. It’s a smooth fabric with no visible texture in the weave, making it perfect for dress shirts.
End-on-End (Fil-à-fil) – Used for solid-colored shirts, this fabric is similar to poplin but identifiable by the weft (horizontal) threads, which are a different color from the warp (vertical) threads.
Oxford – A fabric that gives its name to a shirt style, it’s thicker than poplin. To the touch, it’s less smooth, with more texture due to its basketweave construction. It’s a perfect fabric for my casual shirts.
Pinpoint – Very close to Oxford in its textured feel, though finer. It’s a soft yet durable fabric. The unique weave comes from dyed weft threads passing over two undyed warp threads, then under the next two. It’s a highly versatile fabric, and shirts made from it can be dressed up or down.
Twill (Sergé) – With the same weave as denim, cotton twill is particularly appreciated for its durability, softness, and structure. You can recognize this fabric by its diagonal lines. A twill shirt is easy to iron, comfortable to wear, and gives a polished look.
Herringbone (Chevron) – Similar to twill but with alternating diagonals that give the fabric a very chic look. It’s primarily used for dress shirts.
Pattern
Solid white/blue – for office/business attire and formal events
Checked/striped pattern – suited to more social/casual environments with friends or family
Multiple colors, bright colors, floral details – for weddings, informal dinner parties, afternoons at the beach (try incorporating this into your wardrobe during the summer)
Collar
Collar Design
Collar Points – The tips of the collar.
Collar Point Length – The distance from the Collar Points to where they meet the Collar Band.
Collar Band – The piece of fabric that wraps around the neck.
Collar Height – The height of a folded collar as it fits on the neck.
Tie Space – The distance between the top of the folded collar parts where the shirt is buttoned.
Collar Spread – The angle between Collar Points.
Types of Collars
Collar Stays
Collar stays, also called “collar tabs” or “collar stiffeners”, are flat, rigid pieces of plastic or metal which are inserted in special pockets on the underside of dress shirt collars.
The purpose of the collar stays is to keep the shirt collar in place by adding weight and crispness to an otherwise light and flexible piece of fabric.
Types of collar stays • Removable • Sewn-in: avoid as they may break due to thin plastic, can over time leave an impression in the collar points if over-ironed.
Material of collar stays • Plastic: Plastic collar stays do their job to a degree, however, the plastic is light and flimsy. More often than not, the plastic is too light and too flimsy. You will find that even with plastic collar stays, your dress shirt collar will not lay correctly. • Stainless steel: Stainless steel is the most popular metal for collar stays. Heavy and stiff, these collar stays will do their intended job. You can be sure that your dress shirt collar will lay correctly and look crisp. If you purchase stainless steel collar stays, some manufacturers give an option to personalize the metal collar stays.
Plastic buttons – they’re common, fairly strong and affordable. However, if the manufacturer used low-quality resin in their construction, they can break easily. So there’s always a risk that comes along with them.
Mother of Pearl buttons – these are the preferred type. Typically, they’re made from the shells that surround the pearl. That’s why they’re extremely resilient. But these buttons are also a bit pricier and suit higher-end clothes.
Horn/Wooden buttons – durable alternatives for the buttons of casual shirts.
Cuffs
1-Button Barrel cuffs – the most common style that can feature round, square or angled corners. They wrap around the wrist and button into place. Round button cuffs promote a more casual feel and normally match with a button-down collar.
2/3-Button Barrel cuffs – a formal style where each cuff has 2-3 vertical buttons. Multiple buttons typically suit taller men. The larger barrel length also provides a nice snug fit around your wrist. This helps create a sharper look for more formal/professional settings.
French cuffs– these are twice the length of regular cuffs. They’re designed to be folded back on themselves and sealed with cuff links. They’ve got a distinct look and pair well with a wing-tip collar style or a formal shirt. Use cufflinks for these.
Plain (No Pleat) – Not including pleats in your dress shirt gives it very clean lines and results in a sleek appearance. It also is tighter fitting because you get no extra movement from your dress shirt material. No back pleats is a contemporary shirt design and is very dressy.
Side Pleats (Knife Pleats) – Rear side pleats sit directly under your shirt yoke near each shoulder blade. Each rear side pleat is half an inch wide, which gives the top of your dress shirt two inches of extra fabric, making it roomier in your chest area. This is an excellent pleat style for when you need to move your arms a lot. The pleats are hardly noticeable, creating a primarily smooth back of your dress shirt. They allow the fabric to drape and follow the curve of your back. Because of the subtlety of the rear side pleat, you’ll find it’s a nice style for your most professional business suits.
Box Pleat – This pleat type is found mainly on store-bought button-up dress shirts. It’s a more casual styling for your shirt. Still, it is an acceptable pleat for dress shirts. The center box pleat is formed by two folds next to each other in the center of your shirt, right under the yoke; they are so close they seem to form a square. Each side of this pleat is ¾”, adding three extra inches of movement to your shirt fabric! If you tend to move a lot in your dress shirts, you will do well with this type of dress shirt pleat.
Dart Pleats – Rather than expanding and providing more fabric, dart pleats take away some of your shirt fabric. A dart is created when the fabric is folded together and completely sewn down to the hem. It’s different from a pleat because a pleat is open at the bottom. The result is a slim and tapered waist, giving you less room for movement (slim-fit). This dress shirt style looks modern and quite structured.
Poor nutrition and illness in childhood limit human growth. As a consequence, the average height of a population is strongly correlated with living standards in a population. This makes the study of human height relevant for historians who want to understand the history of living conditions.
Because the effect of better material living standards is to make people taller, human height is used as an indirect measure of living standards. It is especially relevant for the study of living conditions in periods for which little or no other data is available — what historians refer to as the pre-statistical period.
It is important to stress that height is not used as a direct measure of well-being. The variation of height within a given population is largely determined by genetic factors.1
The history of human height allows us to track progress against undernourishment and disease and makes it possible to understand who started to benefit from modern advancements and when.
Ptable.com is a dynamic, web-based periodic table of elements that offers a powerful and intuitive interface for students, educators, and professionals alike. Unlike traditional printed tables, Ptable updates in real-time and integrates data-rich content like element properties, isotopes, and historical data, all presented in a highly interactive and user-friendly format.
Notable features: • Instant data access – Hover over or click any element to see detailed information including properties, electron configurations, and oxidation states. • Multiple views – Switch between physical, atomic, orbital, and isotopic views to suit your learning or research needs. • Multilingual support – Available in dozens of languages, making it accessible to a global audience. • Real-time updates – Constantly maintained with up-to-date scientific information. • Mobile-friendly – Works smoothly across devices without needing to install anything.
Year of discovery comparison
Ptable.com – Focus on year of discovery (the elements in white were not discovered on 1999)
Boiling point comparison
Ptable.com – Focus on boiling point for each element on a linear scale (you can change the color or the type of scale)
Isochrone maps visualize areas reachable within the same travel time from a starting point (e.g., “30 minutes by car from Geneva”).
Advanced tools allow you to: • Combine multiple isochrones (e.g., overlap a 60-minute zone from Geneva and a 30-minute zone from Yverdon). • Filter results to show only areas meeting all criteria.
TravelTime.com
Area reachable within 60 minutes from Lausanne by public transport
Area reachable within 60 minutes from Neuchatel, Geneva and Bern by driving
Les vers de terre constituent la moitié de la biomasse animale terrestre.
1. Le poids écrasant des vers de terre
Un monopole inattendu Selon une étude publiée dans PNAS (2018, voir source en bas de ce post), les vers de terre représentent environ 1,2 milliard de tonnes métriques, soit 50% de la biomasse animale terrestre totale.
En comparaison (voir tableau plus bas) : • Le bétail domestique (vaches, porcs, moutons) pèse 600 millions de tonnes (25%). • Les humains atteignent 60 millions de tonnes (2,5%). • Tous les mammifères sauvages (éléphants, loups, cerfs) ne totalisent que 20 millions de tonnes (0,8%).
Cette domination s’explique par leur densité phénoménale : dans une prairie fertile, on peut trouver jusqu’à 1 million de vers par hectare, pesant collectivement 1 à 3 tonnes.
Pourquoi une telle abondance ? •Une adaptation parfaite : Présents sur tous les continents (sauf déserts et glaciers). • Un cycle de vie rapide : Certaines espèces produisent 100 œufs par an. • Peu de prédateurs directs : Les taupes et oiseaux en mangent, mais pas assez pour limiter leur expansion.
2. Le rôle clé des vers dans les écosystèmes
Ingénieurs des sols Les vers ne sont pas juste nombreux – ils sont indispensables à la vie terrestre. Leur action façonne littéralement notre monde : • Aération des sols : Leurs galeries permettent à l’eau et à l’oxygène de pénétrer. • Fertilisation naturelle : Leurs déjections (turricules) sont 5 fois plus riches en nutriments que la terre environnante. • Recyclage de la matière organique : Ils digèrent 100 tonnes de terre/ha/an, accélérant la décomposition.
Des alliés climatiques méconnus • Stockage du carbone : Les sols riches en vers séquestrent jusqu’à 5 fois plus de CO₂ que les forêts. • Résistance aux inondations : Leurs tunnels réduisent le ruissellement de 30%, limitant l’érosion.
3. L’Impact dévastateur de leur disparition
Un déclin silencieux mais alarmant Depuis 1950, les populations de vers de terre ont chuté de 75% en Europe (Journal of Applied Ecology, 2020), à cause de : • L’agriculture intensive (labour profond, pesticides). • L’urbanisation (bétonnage des sols). • Le changement climatique (sécheresses accrues).
Que se passerait-il s’ils disparaissaient ? • Effondrement des rendements agricoles : -30% selon Rothamsted Research. • Libération massive de CO₂ : Les sols perdraient 140 millions de tonnes de carbone/an. • Inondations catastrophiques : Sans leurs galeries, l’eau s’écoulerait en surface.
4. Vers de terre vs. humanité : un paradoxe frappant
La biomasse en perspective
Catégorie
Biomasse (millions de T)
Part du total
Détails clés
Vers de terre
1 200
50%
Dominent tous les écosystèmes non-désertiques
Bétail domestique
600
25%
Vaches : 400M t, porcs : 100M t
Humains (Homo sapiens)
60
2.5%
Poids moyen : 62 kg/personne
Mammifères sauvages
20
0.8%
Éléphants : 3M t, rongeurs : 7M t
Oiseaux domestiques
40
1.7%
Poulets : 35M t (99% de la biomasse aviaire)
Oiseaux sauvages
2
0.08%
Moineaux, pigeons dominent
Insectes & arthropodes
300
12.5%
Fourmis : 100M t, termites : 70M t
Reptiles & amphibiens
10
0.4%
Serpents : 3M t, grenouilles : 5M t
Autres invertébrés
150
6.3%
Escargots, limaces, etc.
Total estimé
2 382
100%
Ce tableau révèle une réalité brutale : nous avons remplacé la faune sauvage par du bétail, mais les vers restent les maîtres invisibles du monde terrestre.
5. Comment protéger ces héros du sol ?
Solutions concrètes • Agriculture régénérative (sans labour, couverts végétaux). • Interdiction des pesticides tueurs de vers (comme le glyphosate). • Réhabilitation des sols urbains (végétalisation, compost).
Un mouvement mondial en marche • L’ONU a déclaré 2025 “Année internationale des sols”. • Des startups développent des “vers composteurs” pour les villes.
Conclusion : un pouvoir invisible Les vers de terre sont bien plus qu’une curiosité biologique – ils sont les architectes de notre monde. Leur déclin menace notre sécurité alimentaire, notre climat et notre avenir. Pourtant, leur sort reste ignoré.
Et si la vraie “force verte” de la planète n’était pas dans les forêts… mais sous nos pieds ?
✅ Canon : Fait partie de l’histoire principale approuvée par Toriyama. 🔶 Semi-canon : Éléments partiellement intégrés (ex : Jaco explique des détails de Super). ❌ Non-canon : Œuvres dérivées sans impact sur la timeline officielle.
Remarques :
Dragon Ball et Dragon Ball Z ne forment qu’un seul manga (la séparation “Z” est une invention de l’anime).
Dragon Ball Super est le seul manga canon post-DBZ, avec des arcs inédits (ex : Granolah).
Dragon Ball Minus et Jaco the Galactic Patrolman sont les seuls mangas canons pré-DB (préquel).
Dragon Ball SD est une parodie/spin-off sans lien avec le scénario principal.
Pre-Columbian civilizations refer to the societies and cultures that thrived in the Americas before the arrival of Christopher Columbus in 1492. These civilizations, including the Maya, Aztec, and Inca, developed advanced knowledge in architecture, astronomy, agriculture, and governance, leaving a lasting impact on history despite their decline following European colonization.
En 2007, Warren Buffett lançait un défi audacieux à l’industrie de la gestion d’actifs : un fonds indiciel S&P 500 (ETF) sur 10 ans ferait mieux que des fonds de hedge funds pourtant pilotés par des experts. Une décennie plus tard, le verdict est sans appel.
When a project falls behind schedule, the knee-jerk reaction is often to add more people to the team. But does this actually help? According to Brooks’ Law, the answer is a resounding no. In fact, it might make things worse.
📉 𝐁𝐫𝐨𝐨𝐤𝐬’ 𝐋𝐚𝐰 𝐢𝐧 𝐚 𝐍𝐮𝐭𝐬𝐡𝐞𝐥𝐥 “Adding manpower to a late project makes it later.” More people = more complexity, not more progress.
💡 𝐖𝐡𝐲 𝐁𝐢𝐠𝐠𝐞𝐫 𝐓𝐞𝐚𝐦𝐬 𝐁𝐚𝐜𝐤𝐟𝐢𝐫𝐞 ● 𝐑𝐚𝐦𝐩-𝐔𝐩 𝐓𝐢𝐦𝐞: New team members need time to get up to speed, pulling focus and resources away from the project. ● 𝐂𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧 𝐎𝐯𝐞𝐫𝐥𝐨𝐚𝐝: More people mean more meetings, emails, and misaligned priorities. Coordination becomes a bottleneck. ● 𝐃𝐢𝐦𝐢𝐧𝐢𝐬𝐡𝐢𝐧𝐠 𝐑𝐞𝐭𝐮𝐫𝐧𝐬: Not all tasks can be easily divided, and adding more hands can lead to duplicated efforts or confusion.
🔑 𝐇𝐨𝐰 𝐭𝐨 𝐀𝐯𝐨𝐢𝐝 𝐭𝐡𝐞 𝐏𝐢𝐭𝐟𝐚𝐥𝐥𝐬 ● 𝐒𝐭𝐢𝐜𝐤 𝐭𝐨 𝐒𝐦𝐚𝐥𝐥𝐞𝐫, 𝐒𝐤𝐢𝐥𝐥𝐞𝐝 𝐓𝐞𝐚𝐦𝐬: Focus on quality over quantity. A smaller, highly skilled team can often outperform a larger, less cohesive one. ● 𝐒𝐭𝐫𝐞𝐚𝐦𝐥𝐢𝐧𝐞 𝐂𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧: Use tools and processes that minimize friction and keep everyone aligned. ● 𝐀𝐝𝐝𝐫𝐞𝐬𝐬 𝐑𝐨𝐨𝐭 𝐂𝐚𝐮𝐬𝐞𝐬: Instead of adding people, identify and fix the underlying issues causing delays. ● 𝐏𝐥𝐚𝐧 𝐟𝐨𝐫 𝐑𝐞𝐚𝐥𝐢𝐬𝐭𝐢𝐜 𝐓𝐢𝐦𝐞𝐥𝐢𝐧𝐞𝐬: Avoid overpromising and set achievable goals from the start.
🌟 𝐓𝐡𝐞 𝐁𝐢𝐠 𝐓𝐚𝐤𝐞𝐚𝐰𝐚𝐲: More people ≠ More productivity. The right team size matters!