رح نكمل قسم الريدنق و المفردات بعد التراويح 👋🏻

عدنااا

قطعة مشاكل التصميم

Basic engineering design includes defining the problem as a first
step. In the problem definition step, the needs of potential
customers are investigated. potential competitors are identified
and their market positions are characterized: constraints imposed
by government regulations or technological limitations are
identified, and constraints on the design effort such as available
personnel, time, and money are established. The problem definition
process results in a clear understanding of the scope of the design
project and the resources available to solve the design problem.
This understanding is often expressed in a problem statement. This
understanding is also expressed in the form of criteria and
constraints.

قطعة خشب النانو

1) Expanded polystyrene (or «Styrofoam») is an excellent
insulator. That's why it's a popular material for insulating
buildings-and why those cheap little cups of deli coffee still burn
your tongue after 30 minutes. But its environmental record leaves
something to be desired. It's nonbiodegradable, harmful to animals
who accidentally eat it and made from potential carcinogens or
cancer-causing chemicals.


(2) developed a super-lightweight insulating material they say
could prove to be a better, more eco-friendly alternative. The
material, made from tiny wood fibers is called nano wood, it blocks
heat at last 10 degrees better than Styrofoam or silica aerogel, a
common insulator, and it can take a least 30 times mon pressure
tha 45n crushed.


(3) Working in the lab of materials scientist Liangbing Hu. Post
doctoral researcher Tain Li is the lead author on the study,
published in the journal science Advances.


(4) Hu and his team had been working on nanocellulose, the nano-
sized version of the fibrous material that makes plants and trees
rigid. Nanocellulose has an impressive strength- to-weight ratio,
about eight times greater than than of steel.


(5) For the nano wood, the them removed the lignin, the polymer
that holds the cells of wood together Removing the lignin, a heat
conductor. gave the resulting product powerful ? capabilities. It
also turned the product white which means it reflects light. The ?
think nano wood has enormous potentials as a green ? material.
Using it could potentially «save billion» in energy costs says Li

🤩🤩🥇الي يسألون خاص عن الدورة هذا البوستر فيه كل المعلومات

دورة مارس 2026 - STEP

جميع النماذج مشروحه ومحدثة
نماذج الريدنق مترجمة وملخصه من ١١٥٦ الى ٢٧٩ ورقة فقط .