Corn stalks are one of the major sources of agricultural waste in China. There are about 200 million tons of corn wastes each year. Most of them are directly discarded or burned on the spot, causing waste of resources and environmental pollution. Corn straw is mainly composed of three major components: cellulose, hemicellulose and lignin. After enzymatic hydrolysis and biotransformation, biomass energy such as ethanol and butanol can be generated, and about 30% of energy can be converted. The Liu Xiaofeng Research Group of the Center for Applied and Environmental Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences used the high-efficiency strain Trametes hirsute Y9 to conduct pretreatment of corn stover. The results showed that after 42 days of treatment, the lignin degradation reached 71.49%, and the enzymolysis rate of the treated raw material reached 73.99%. Scanning electron microscopy of the pretreated raw materials revealed that the surface of the straw after pretreatment became rough, the gaps between the cellulose fibers were clearly visible, and many pores were formed. The study also showed that the amount of enzymatic saccharification was inversely proportional to the lignin content, and was not significantly related to cellulose and hemicellulose. The results were published in INTERNATIONAL BIODETERIORATION & BIODEGRADATION (2011, 65: 931-938).
Waist tool holder is a type of wearable tool organizer that is designed to be worn around the waist or hips. It typically consists of a sturdy belt or strap that is adjustable to fit the wearer, and several pockets or loops that can hold various tools, such as screwdrivers, pliers, hammers, and other hand tools.
Waist tool holders are commonly used by tradespeople, such as carpenters, electricians, plumbers, and mechanics, who need to carry multiple tools with them while working. By wearing a waist tool holder, these professionals can keep their tools organized and easily accessible, without having to constantly bend down or reach into a tool bag.
Waist tool holders are available in a variety of materials, including leather, nylon, and canvas, and can be customized with different pocket configurations to suit the specific needs of the wearer. They are also adjustable to fit different waist sizes and can be worn over clothing or attached directly to a Work Belt.
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