Subjects: Medicine, Pharmacy >> Pharmacology submitted time 2023-11-12
Abstract： Objective: To explore the clinical effect of tumescent technique in early operation of massively burned patients. Methods: A retrospective cohort study was conducted on 27 patients with large area burns accorded with the inclusive criteria and admitted from June 2019 to November 2022. Among them, 14 patients admitted from June 2021 to November 2022 were treated with intraoperative injection of tumescent fluid for hemostasis and were rolled in tumescent group, or observation group; 13 patients admitted from January 2019 to November 2021 were treated with tourniquet for hemostasis were rolled in tourniquet group, or control group. The operation time, blood loss, blood preparation, blood transfusion, preoperative and postoperative hemoglobin, intraoperative and postoperative blood pressure, heart rate, postoperative skin graft survival rate and other related indicators were compared between the two groups, and the clinical effects were observed. Results: There was no statistical difference in preoperative blood volume between the two groups (p > 0.05). The actual amount of blood transfusion in the observation group was less than that in the control group, and the difference was statistically significant (p < 0.05). The intraoperative blood loss and operation time in the observation group were significantly less than those in the control group, and the difference was statistically significant (P < 0.05). There was no statistical difference in preoperative and postoperative hemoglobin between the two groups (p > 0.05). The survival rate of skin grafting in the observation group were slightly higher than those in the control group, and the difference was statistically significant (P < 0.05). The vital signs of patients in the observation group were more stable than those in the control group, and the difference was statistically significant (P < 0.05). Conclusion: Tumescent technique can reduce the amount of intraoperative blood loss, shorten the operation time, improve the survival rate of postoperative skin grafting, and ensure the stability of intraoperative hemodynamics in early operation of massively burned patients.
Peer Review Status:
Awaiting Review
Subjects: Library Science，Information Science >> Library Management submitted time 2023-08-27
Abstract： This paper expounds the inevitability of integrating the metaverse into the wisdom service of ancient trees in agricultural libraries, reflects on the practice of smart knowledge service in agricultural libraries under the metaverse threshold and the current situation of smart knowledge service in ancient tree disciplines, and further looks forward to the trend of intelligent knowledge service for the ecological protection of ancient trees in libraries under the metaverse threshold.
Peer Review Status:Awaiting Review
Subjects: Materials Science >> Materials Science (General) submitted time 2023-03-19 Cooperative journals: 《金属学报》
Abstract： 0Cr16Ni5Mo steel is the most popular material used for fasteners and bolts in the marine engineering equipment. With the light weight trend of equipment, the strength grades of the steel become higher. 0Cr16Ni5Mo steel combines high strength, high hardness and high fracture toughness with good ductility. However, high strength steel is prone to degradation by hydrogen, resulting in the loss of its excellent mechanical properties. And the presence of diffusible hydrogen near a notch tip is easily to cause crack propagation. The susceptibility to hydrogen embrittlement of steel is largely determined by the hydrogen diffusivity and the behaviors of hydrogen trapping in the steel. Therefore, the hydrogen trapping behaviors of 1000 MPa grade 0Cr16Ni5Mo steel have been investigated by means of thermal desorption spectroscopy (TDS). Meanwhile, the hydrogen embrittlement susceptibility of the notch and smooth specimens was evaluated by slow strain rate tests (SSRT), and the fracture morphology was also observed. The results showed that the main hydrogen traps of experimental steel was contained dislocations and grain boundaries. The elongation of hydrogen charged specimens was decreased obviously rather than tensile strength. With the increase in hydrogen concentration, the fracture surfaces of hydrogen charged specimens was displayed a transition from ductile microvoid coalescence to a mixed morphology of dimples, quasicleavage and intergranular features. The steel had little irreversible hydrogen due to less C content, and had much susceptibility with reversible hydrogen contained. The model of hydrogen induced stress was calculated on basis oEshelby equivalent inclusion, validating the relationship between stress concentration and hydrogen concentration.
Subjects: Medicine, Pharmacy >> Clinical Medicine submitted time 2022-12-20 Cooperative journals: 《中国全科医学》
Abstract：
Background The occurrence and development of osteoporosis have experienced a long process, the whole life cycle of people should pay attention to bone health, early prevention and treatment is of positive significance. Objective To conduct expert questionnaire analysis on the assessment of TCM symptoms in the high-risk population of osteoporosis in Ling-nan region and form expert consensus opinions. Methods Based on previous literature review and the first round assessment questionnaire involving TCM symptoms in the high-risk population of osteoporosis in Ling-nan region, we accomplished the optimization for the second round of expert questionnaire，in combination with the first academic conference of Ling-nan Bone and Joint Disease in December 2021 and the expert proposal of Guangdong Provincial Association of Chinese Medicine concerned Specialist Committee on Bone and Joint Degeneration and Injury. The experts in the department of orthopedics in Ling-nan region were consulted for their opinions, and the data of the investigation results were statistically analyzed. Results (1) The survey experts’ positivity and professional were found high, and the distribution region was wide, which indicated better representation. (2) The levels of concentration and coordination of the research experts’ opinions were identified relatively better. The preferred items of TCM symptoms of people at high risk of osteoporosis in Ling-Nan region were: ①“Humpback deformity”; ②“Bone pain all over”; ③“Fracture occurred in recent 5 years”; ④“Lumbar and back pain”; ⑤“Reduced height”; ⑥“The joints are heavy and unable to bend or extend”; ⑦“Heavy body trapped”; ⑧“Fatigue and lack of strength ”; ⑨“Tooth shaking and hair loss”, et al.; Conclusion Evidence-based medicine combined with Delphi method can better summarize the recommendations of experts in this field on the assessment of TCM symptoms in high-risk groups of osteoporosis in Ling-Nan region. All these can better provide references for the subsequent early diagnosis of osteoporosis and the development of the assessment scale.
Subjects: Biology >> Botany submitted time 2022-08-30 Cooperative journals: 《广西植物》
Abstract： Epimedium sagittatum plants have an important medicinal value and a huge market demand, but the characteristics on dormancy and germination of their seeds are still unclear, which seriously affect its industrial seedling production and cultivation. In order to verify the type of seed dormancy and the optimal way to break dormancy, the mature seeds of E. sagittatum were used as experimental materials, we investigated the water uptake and the desiccation tolerance of seeds, as well as the effects of temperature, stratification and phytohormone on seed dormancy and germination. The results were as follows: (1) E. sagittatum seeds had no physical dormancy and (2) Have desiccation tolerance. (3) The germination percentage of seeds was zero at 4-25 篊 and darkness, and these seeds had dormancy characteristics. (4) The embryo/seed ratio was very small, as well as embryo growth and development and seed germination rate and germination percentage were increased by stratification at 4 篊, 10 篊 and fluctuating temperature.(5) Gibberellin and fluridone significantly increased the germination rate and germination percentage of seeds. We considered that the dormancy type of E. sagittatum seeds was morphophysiological dormancy. The optimal method to release dormancy and promote germination was that seeds were stratified at 10 篊 for 30 days and then germinated at 4 篊.
Subjects: Geosciences >> Other Disciplines of Geosciences submitted time 2019-09-10 Cooperative journals: 《干旱区研究》
Abstract： 紫花苜蓿是我国重要的豆科牧草，具有较强的抗旱能力，而水分亏缺是影响其产量的主要逆境因子之一。通过大田试验对不同水分胁迫下紫花苜蓿的光合特性及产量进行研究，结果表明：① 土壤水分胁迫对紫花苜蓿光响应参数影响显著(P＜0.05)，随着水分胁迫的加剧，最大净光合速率、表观量子效率、光饱和点逐渐降低，暗呼吸速率、光补偿点逐渐升高，从而直接影响紫花苜蓿光合作用对弱光的吸收和转化效率。② 随着水分胁迫的加剧紫花苜蓿叶片的净光合速率(Pn)和蒸腾速率(Tr)呈显著的下降趋势，气孔导度(Gs)呈先下降后上升的趋势，表明轻度水分胁迫下气孔因素是Pn下降的主要因素，中度和重度水分胁迫下非气孔因素是Pn降低的主要因素。③ 当光合有效辐射(PAR)为1 200 μmol·m-2·s-1时，轻度水分胁迫的水分利用效率(WUE)显著大于充分灌溉的WUE (P<0.05)，表明适度水分胁迫可提高紫花苜蓿叶片的水分利用效率。④ 轻度水分胁迫与充分灌溉干草产量之间无显著差异，表明轻度水分胁迫能达到高产节水的目的。
Subjects: Biology >> Zoology submitted time 2018-12-24 Cooperative journals: 《动物营养学报》
Abstract：本试验旨在研究茶树油对断奶仔猪血清、肝脏和肠黏膜抗氧化指标的影响。试验选取21日龄体重[(6.73±0.12) kg]相近的健康“杜×长×大”三元杂交断奶仔猪120头，随机分为5组，每组6个重复，每个重复4头仔猪。5个组分别为对照组（CON组，饲喂基础饲粮）、抗生素组[ANT组，饲喂基础饲粮+200 mg/kg硫酸黏菌素（10%）+75 mg/kg金霉素（15%）]、低茶树油组（LTO组，饲喂基础饲粮+50 mg/kg茶树油）、中茶树油组（MTO组，饲喂基础饲粮+100 mg/kg茶树油）和高茶树油组（HTO组，饲喂基础饲粮+150 mg/kg茶树油）。试验期21 d。结果表明：1）HTO组仔猪血清总抗氧化能力（T-AOC）显著高于LTO和MTO组（P<0.05），MTO组仔猪血清超氧化物歧化酶（SOD）活性显著高于HTO、CON和ANT组（P<0.05），LTO组仔猪血清过氧化氢（H2O2）含量显著低于MTO、HTO和CON组（P<0.05）。2）与CON和ANT组相比，LTO、MTO和HTO组仔猪肝脏T-AOC显著提高（P<0.05），LTO和MTO组仔猪肝脏谷胱甘肽过氧化物酶（GSH-Px）活性和H2O2含量显著提高（P<0.05），HTO组仔猪肝脏还原型谷胱甘肽（GSH）含量显著提高（P<0.05）；与CON组相比，LTO和MTO组仔猪肝脏SOD活性显著提高（P<0.05）。3）HTO组仔猪空肠黏膜GSH-Px和SOD活性显著高于ANT组（P<0.05），LTO、MTO、HTO和ANT组仔猪空肠黏膜H2O2含量显著低于CON组（P<0.05）。4）HTO组仔猪回肠黏膜SOD活性和GSH含量显著高于CON组（P<0.05），LTO、MTO、HTO和ANT组仔猪回肠黏膜丙二醛（MDA）含量显著低于CON组（P<0.05）。综上，茶树油可提高断奶仔猪血清、肝脏和肠黏膜抗氧化酶活性，减少血清、空肠黏膜H2O2的含量，进而提高断奶仔猪的机体抗氧化功能，总体效果优于抗生素，建议添加量为100 mg/kg
Subjects: Biology >> Zoology submitted time 2018-12-24 Cooperative journals: 《动物营养学报》
Abstract：本试验旨在研究茶树油对断奶仔猪血清、肝脏和肠黏膜抗氧化指标的影响。试验选取21日龄体重[(6.73±0.12) kg]相近的健康“杜×长×大”三元杂交断奶仔猪120头，随机分为5组，每组6个重复，每个重复4头仔猪。5个组分别为对照组（CON组，饲喂基础饲粮）、抗生素组[ANT组，饲喂基础饲粮+200 mg/kg硫酸黏菌素（10%）+75 mg/kg金霉素（15%）]、低茶树油组（LTO组，饲喂基础饲粮+50 mg/kg茶树油）、中茶树油组（MTO组，饲喂基础饲粮+100 mg/kg茶树油）和高茶树油组（HTO组，饲喂基础饲粮+150 mg/kg茶树油）。试验期21 d。结果表明：1）HTO组仔猪血清总抗氧化能力（T-AOC）显著高于LTO和MTO组（P<0.05），MTO组仔猪血清超氧化物歧化酶（SOD）活性显著高于HTO、CON和ANT组（P<0.05），LTO组仔猪血清过氧化氢（H2O2）含量显著低于MTO、HTO和CON组（P<0.05）。2）与CON和ANT组相比，LTO、MTO和HTO组仔猪肝脏T-AOC显著提高（P<0.05），LTO和MTO组仔猪肝脏谷胱甘肽过氧化物酶（GSH-Px）活性和H2O2含量显著提高（P<0.05），HTO组仔猪肝脏还原型谷胱甘肽（GSH）含量显著提高（P<0.05）；与CON组相比，LTO和MTO组仔猪肝脏SOD活性显著提高（P<0.05）。3）HTO组仔猪空肠黏膜GSH-Px和SOD活性显著高于ANT组（P<0.05），LTO、MTO、HTO和ANT组仔猪空肠黏膜H2O2含量显著低于CON组（P<0.05）。4）HTO组仔猪回肠黏膜SOD活性和GSH含量显著高于CON组（P<0.05），LTO、MTO、HTO和ANT组仔猪回肠黏膜丙二醛（MDA）含量显著低于CON组（P<0.05）。综上，茶树油可提高断奶仔猪血清、肝脏和肠黏膜抗氧化酶活性，减少血清、空肠黏膜H2O2的含量，进而提高断奶仔猪的机体抗氧化功能，总体效果优于抗生素，建议添加量为100 mg/kg
Subjects: Psychology >> Other Disciplines of Psychology submitted time 2018-09-13 Cooperative journals: 《心理学报》
Abstract：近年来, 辱虐管理与员工创造力的关系受到越来越多研究者的关注。在以往研究的基础上, 本研究构建了一个有调节的中介作用模型, 以探讨中国文化情境下辱虐管理影响员工创造力的中介心理机制及边界条件。采用多阶段−多来源的策略, 以93名主管和369名员工为对象, 通过多水平结构方程建模技术对三阶段主管−员工配对调查所获取的数据进行分析, 结果表明：主管的辱虐管理行为会通过心理契约破坏的中介作用, 对员工创造力产生间接的消极影响; 但该负向的间接关系的强度对高中庸思维者而言较弱。本研究有助于揭示辱虐管理影响员工创造力的心理机制及边界条件, 研究结果对企业员工创造力及创新行为的管理实践也有一定启示。
Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2018-08-13 Cooperative journals: 《计算机应用研究》
Abstract： By analyzing the existing cellular automata theory and combining the characteristics of group evacuation, this paper establishes an ordinary supermarket fire evacuation model that considers the attractiveness of exit, fire repulsion, friction, repulsion and occupant psychology. The model fully considers the influence of multiple factors on the evacuation, normalizes the influencing factors, and uses the cell transfer intensity established by considering the comprehensive influencing factors as the pedestrian movement rule. This paper studies the impact of the number of evacuees in supermarket, export width and distance, and herd mentality on evacuation time. Pathfinder+FDS, a simulation evacuation software, is used to verify the model, which showed that the evacuation model has certain credibility. The research shows that pedestrian evacuation time is linearly and positively correlated with the number of evacuees, and there is a critical point for the number of evacuees; the wider the exit width is or the more exits are, the shorter the evacuation time is, but once the exit threshold is reached, the impact on the evacuation time is not significant; in unfamiliar environments or emergency situations, appropriate herding behavior will improve the efficiency of evacuation.
Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2018-06-19 Cooperative journals: 《计算机应用研究》
Abstract： The multi-objective unequal area facility layout problem (UA-FLP) is the problem of placing departments with different areas in a facility so that departments satisfy some given objectives and constraints. This paper built a multi-objective optimization model based on minimizing the material handling costs and maximizing the closeness rating scores, and proposed a heuristic algorithm (HA) to solve the multi-objective UA-FLP. This paper proposed the heuristic layout updating strategy to update the layouts, and used the combination of the local search based on the adaptive gradient method and the heuristic department deformation strategy to deal with the interface between any two different departments. The proposed heuristic algorithm combines the local search based on the Pareto optimization and the global search based on the niche爐echnology to obtain Pareto-optimal solutions of the problem. Using two representative instances from the literature to test the performance of the algorithm, the experimental results show that the proposed heuristic algorithm is an effective method for solving the multi-objective UA-FLP.
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