-
2020 Inorganic powder modification and application technology training in plastics
Time of Update: 2022-08-22
Therefore, the National Institute of Building Materials Industry Technology Information is scheduled to hold a technical training on inorganic powder modification and application in plastics in early March 2020, aiming to help companies optimize the functionality of powder materials, improve product added value, and extend inorganic powder.
-
What precautions should be taken when using a polarimeter
Time of Update: 2022-05-01
2. Before turning on the power, check whether there are foreign objects in the sample room, whether the sodium light source switch is in the specified position, whether the indicator switch is in the off position, and whether the instrument is placed in a suitable position.
-
THER ADV GASTROENTER: Fecal carcinoembryonic antigen as a diagnostic marker for colorectal adenomatous polyposis and asymptomatic colorectal cancer
Time of Update: 2022-04-21
Diagnosis and screening methods for colorectal cancer (CRC) include fecal occult blood test (FOBT), serum carcinoembryonic antigen (SCEA), sigmoidoscopy and colonoscopy, each of which has advantages and disadvantages .
-
Pancreatology: Pancreatic islet autotransplantation (TPIAT) patients with total pancreatectomy will significantly reduce bone density in the first year after surgery
Time of Update: 2022-01-07
diabetes To this end, the researchers used dual-energy X-ray absorptiometry (DXA, n=78, before TPIAT, n=65, paired 12 months before and after TPIAT) to measure the BMD of the whole body, lumbar spine, and left and right hip joints of 78 patients , BMD Z-score and bone mineral content (BMC), and use paired and two-sample t-test, linear regression and Fisher's exact test to test the relationship with the clinical history including age, smoking status, and drugs .
-
Acid-base dissociation theory and acid-base proton theory
Time of Update: 2021-06-18
Protic acid according to the theory, the reaction is called a proton donating acid substance, such as the HCI, NH2 .
The essence of acid-base reaction is the process of proton transfer between conjugate acid-base pairs .
-
How to judge the failure of thermal expansion valve? How to adjust the thermal expansion valve
Time of Update: 2019-10-24
The thermal expansion valve is one of the four components of the refrigeration system, which is an important device to regulate and control the refrigerant flow and pressure into the evaporator, and a
