There are a variety of occupational harmful factors in chemical production, such as toxic chemicals, productive dust, corrosive chemicals, harmful physical factors (high temperature, low temperature, etc.) or biological factors. Under certain conditions, occupational harmful factors directly affect
Solid wood doors exude elegance and sophistication, with their classic design that never goes out of style. This timeless appeal makes them a popular choice for many homeowners. However, when installing solid wood doors, improper handling can lead to warping or deformation. To ensure the longevity
Welding is a common industrial process that involves high heat, bright light, and potentially hazardous materials. Despite its widespread use, it poses several significant occupational risks. Understanding these hazards is crucial for ensuring the safety of welders and others in the workplace.
The role of cellulase in animal nutrition is significant, as it helps to enhance the efficiency of feed utilization and improve overall animal health. By supplementing the deficiency of various endogenous digestive enzymes in animals, cellulase reduces the occurrence of digestive tract diseases and
The role of cellulase in animal nutrition is significant, as it helps improve feed efficiency and overall health. By supplementing the deficiency of various endogenous digestive enzymes in animals, cellulase reduces the occurrence of digestive tract diseases and enhances the digestion and absorption
The optical theodolite is a precision instrument commonly used in surveying for measuring horizontal and vertical angles. It consists of three main components: the base, the sighting unit, and the telescope. Each part plays a critical role in ensuring accurate measurements.
First, the base serves a
In today's society, there is a growing emphasis on energy efficiency and environmental protection. As a result, aerated building materials have become one of the most promising options in the construction industry due to their eco-friendly nature. With this increasing demand, more and more investors
China is rich in rare metal mineral resources, with significant deposits found in regions such as the Inner Mongolia Autonomous Region (Bayan Obo), Shandong Province (Weishan), Jiangxi Province (Funan, Yichun), Guangdong Province (Northern Guangdong), and Xinjiang Uygur Autonomous Region (Fuyun), am
PP plastic tougheners are commonly used in general polypropylene (PP) materials, but they come with two major disadvantages:
1. **Low fracture toughness** – This means the product is prone to breaking easily when subjected to external forces. It becomes brittle and weak under stress.
Mahogany furniture has long been a favorite among Chinese people, not only for its classic style but also for its eco-friendly nature, which aligns with today’s growing emphasis on sustainability and environmental protection. Made from precious woods, it represents the essence of traditional
Mahogany furniture has long been a favorite among Chinese people, not only for its traditional aesthetic but also for its eco-friendly nature, which aligns with today's growing emphasis on sustainability and environmental protection. Made from precious woods, it represents the essence of Chinese cra