Effects of blood components of preoperative autologous blood donation on functions of myelopoietic stem cells.

Objective: To explore the effects of preoperative autologous whole blood donation and autologous pure red blood cell (RBC) donation on hematopoietic stem cells (HSC), clarify the effects of transfusion by different blood components on HSC, and improve the treatment effect of autotransfusion.

Methods: Forty healthy male New Zealand rabbits were divided into five groups ( = 8) at random: control (Group A), surgery alone (Group B), surgery + blood sampling (Group C), surgery + preoperative autologous whole blood autotransfusion (Group D), and surgery + preoperative autologous pure RBC autotransfusion (Group E). The rabbits' bone marrow was collected before surgery (T1), 6 h after surgery (T2), and 24 h after surgery (T3) to detect the cell count, the reactive oxygen species (ROS) concentration, the ratio of senescent cells, and the expression of HSC-related proteins ( and ).

International tourism and business productivity: does eco-friendly technologies matter?

This research is aimed at determining whether eco-friendly technologies go beyond and above in providing business productivity in international tourism. For this, the study obtained data from different databases, and this data range consisted of 2010-2020. The study applied the co-integration analysis, random and static technique, regression analysis technique, split analysis technique, and mediating effect tests on Chinese data.

Particle swarm optimization algorithm with Gaussian exponential model to predict daily and monthly global solar radiation in Northeast China.

Reliable global solar radiation (R) information is crucial for the design and management of solar energy systems for agricultural and industrial production. However, R measurements are unavailable in many regions of the world, which impedes the development and application of solar energy. To accurately estimate R, particle swarm optimization (PSO) algorithm integrating Gaussian exponential model (GEM) was proposed for estimating daily and monthly global R in Northeast China.

The effect of different storage times on the oxygen-carrying capacity of the exosomes of red blood cells.

Background: After storing blood for a period of time, the structure and properties of the red blood cells (RBC) will change, which results in a decrease in the oxygen-carrying capacity, and further has a certain impact on their exosomes.

Objectives: Effective oxygen uptake (Q), P50, 2,3-DPG, and Na+-K+-ATP of RBC after different storage times were detected. Electron microscopy was used to observe the morphology of RBC and the characteristics of secreting exosomes.

Significant improvement in catalytic activity and enantioselectivity of a Phaseolus vulgaris epoxide hydrolase, PvEH3, towards ortho-cresyl glycidyl ether based on the semi-rational design.

The investigation of substrate spectrum towards five racemic (rac-) aryl glycidyl ethers (1a-5a) indicated that E. coli/pveh3, an E. coli BL21(DE3) transformant harboring a PvEH3-encoding gene pveh3, showed the highest EH activity and enantiomeric ratio (E) towards rac-3a.

Effect of Acute Normovolemic Hemodilution Combined with Controlled Low Central Venous Pressure on Blood Coagulation Function and Blood Loss in Patients Undergoing Resection of Liver Cancer Operation.

Background/aims: This paper aims to investigate the effect of acute normovolemic hemodilution (ANH) used with controlled low central venous pressure (LCVP) technology on perioperative bleeding and coagulation in hepatocellular carcinoma operation patients.

Methodology: A total of 60 cases undergoing hepatic resection operation were randomly divided into the control group, LCVP group (Group II), and ANH + LCVP group (Group III). The changes of hemodynamic indexes at different time points in each group were observed and recorded, along with the volume of allogenous blood transfusion and the number of patients undergoing allogenous blood transfusion.

Effects of intrathecal anesthesia with different concentrations and doses on spinal cord, nerve roots and cerebrospinal fluid in dogs.

Objective: To investigate the effects of intrathecal anesthesia with bupivacaine, levobupivacaine and ropivacaine hydrochloride at different doses on the spinal cord, nerve roots and cerebrospinal fluid (CSF) in dogs.

Methods: Forty-two mongrel dogs were randomly divided into normal saline group (C; 2 ml), 0.5% (B1) and 0.

Cross-sectional study of the ophthalmological effects of carbon disulfide in Chinese viscose workers.

This article presents cross-sectional investigation results of ophthalmological effects for the occupational exposure to carbon disulfide of workers at a large viscose fibre factory in the middle part of China. The total of 271 exposed subjects (191 males, 80 females) and 133 workers (93 males, 40 females) not exposed to any toxic agent in the working environment underwent ophthalmological examination. The self-administered questionnaire collected data on the medical history and ophthalmological complaints during the past three months.