DEH 控制系统 AST 电磁线圈短路分析及处理

介绍了DEH控制系统AST电磁阀控制回路的工作原理,叙述了在生产现场遇到的故障现象,分析了出现故障的原因．阐述了相关处理方法。     

补充大豆多肽对递增负荷运动大鼠血清LDH、ALT、AST活性的影响

观察了5周递增负荷训练并同时补充大豆多肽后的大鼠在运动后某些血清酶的变化,旨为在训练中补充大豆多肽对身体机能及运动后恢复的作用提供一定的理论依据.结果发现:补充大豆多肽降低了运动后血清LDH和AST活性.提示:补充大豆多肽可能起到预防骨骼肌和心肌运动性微损伤和促进损伤恢复的作用.     

Toward a justice-centered ambitious teaching framework: Shaping ambitious science teaching to be culturally sustaining and productive in a rural context

We find ourselves at a time when the need for transformation in science education is aligning with opportunity. Significant science education resources, namely the Next Generation Science Standards (NGSS) and the Ambitious Science Teaching (AST) framework, need an intentional aim of centering social justice for minoritized communities and youth as well as practices to enact it. While NGSS and AST provide concrete guidelines to support deep learning, revisions are needed to explicitly promote social justice. In this study, we sought to understand how a commitment to social justice, operationalized through culturally sustaining pedagogy (Paris, Culturally sustaining pedagogies and our futures. The Educational Forum, 2021; 85, pp. 364–376), might shape the AST framework to promote more critical versions of teaching science for equity. Through a qualitative multi-case study, we observed three preservice teacher teams engaged in planning, teaching, and debriefing a 6-day summer camp in a rural community. Findings showed that teachers shaped the AST sets of practices in ways that sustained local culture and addressed equity aims: anchoring scientific study in phenomena important to community stakeholders; using legitimizing students' stories by both using them to plan the following lessons and as data for scientific argumentation; introducing local community members as scientific experts, ultimately supporting a new sense of pride and advocacy for their community; and supporting students in publicly communicating their developing scientific expertise to community stakeholders. In shaping the AST framework through culturally sustaining pedagogy, teachers made notable investments: developing local networks; learning about local geography, history, and culture; building relationships with students; adapting lessons to incorporate students' ideas; connecting with community stakeholders to build scientific collaborations; and preparing to share their work publicly with the community. Using these findings, we offer a justice-centered ambitious science teaching (JuST) framework that can deliver the benefits of a framework of practices while also engaging in the necessarily more critical elements of equity work.     

中年亚健康人群血清生化指标研究

目的：了解中年亚健康人群的血清生化指标特点。方法：以筛选出的中年（35～55岁）亚健康人群为研究对象（203例,其中男性131例,女性72例）,以中年健康人群作为对照（40例,其中男性20例,女性20例）,检测其空腹血尿酸（UA）、血糖（GLU）、血脂及肝功能相关的丙氨酸氨基转移酶（ALT）、天门冬氨酸氨基转移酶（AST）等生化指标,并分析各生化指标的特点。结果：中年亚健康人群的UA、TC、TG、TC/HDL-C和LDL-C水平均显著高于健康对照组,且亚健康男性高于同年龄段的亚健康女性（P〈0.05）,HDL-C水平显著低于健康对照组,且亚健康男性低于同年龄段的亚健康女性（P〈0.05）;GLU水平均无显著性差异（P〉0.05）;亚健康男性的TG水平达1.86±0.94 mmol/L,明显高出正常血脂上限水平1.7 mmol/L,表现出边缘性升高;亚健康组与健康组的ALT、AST、ALT/AST等肝功能指标无显著性差异,但是亚健康男性的ALT、AST、ALT/AST和ALP显著高于亚健康女性;亚健康男性三个年龄段的UA水平均高于正常范围;随着年龄的增长,亚健康人群的TG及TC/HDL-C水平均有增高的趋势,HDL-C则呈下降的走势。结论：中年亚健康男性的血尿酸和血脂等生化指标表现出异常的趋势。     

A Single Centre Prospective Study of Liver Function Tests in Post Liver Transplant Patients

Liver transplantation means surgical replacement of a diseased liver with a healthy liver. The survival rate used to be 30 % after 1 year and LTx was considered to be the last procedure when all medical or surgical intervention failed. Advances in donor organ preservation, surgical techniques, patient selection, immunosuppressive regimens and treatments for opportunistic infections all have contributed to substantially improve the survival rates. Despite substantial technological, medical and surgical advances, liver transplantation remains a complex procedure that is accompanied by significant morbidity and mortality. The post-operative outcome of each patient varies greatly depending on the patient’s pre- operative state, quality of the donated organ and the complexity of the surgery. Complications occur both immediately post transplant and in the long term. Most of the problems can be satisfactorily assessed with a panel of routine LFTs results of which are generated quickly, cheaply on the analyzer which operates 24 h. Liver Function Test identifies the presence of problem but not problem itself. Abnormal results can be meaningful only when used with clinical data, radiological findings. The study includes 75 post LTx patients in three groups adults (non ACR), Pediatrics and ACR. All recipients were on immunosuppressive therapy (tacrolimus, mycophenolate and methylprednisolone), antiviral (ganciclovir), antiprotozoal, antibacterial and antifungal (fluconazole). 5 mL of blood was drawn in plain vacutainer from the post LTx patients every day for 15 days and LFT and GGT was done. Routinely performed liver function tests correlates well with clinical complications involving liver in the transplant patients. Instead of daily testing, may be alternate day analysis of LFT should be sufficient for effective monitoring of patients. The total protein and albumin and the transaminases offer little help in monitoring LFT post LTx. The elevated levels of serum GGT and ALP may be related to chronic immune damage to the transplanted liver. Serum GGT and ALP can be used as early markers for diagnosing biliary complications and can be used to asses adequacy of endoscopic treatment in the group of patients presenting early. Thus, most of the problems can be satisfactorily assed with a panel of routine LFTs generated quickly, cheaply on analyzer which operates 24 h each day. However, it must be emphasized that LFTs may identify the presence of problems but not the problem itself and the abnormal results are meaningful only when correlated with other clinical information.     

Effect of antihypertensive drugs on cardiac enzymes in hypertension with myocardial infarction in NIDDM

Enzymology is a diagnostic indicator for myocardial infarction and diabetes in hypertension patients. Therefore the selection of methods for measurement of cardiac enzyme, Aspartate transaminase (AST), Creatine kinase(CK), and isoenzyme of creatine kinase (MB form), determine the effectiveness of antihypertension drug would provide the physician with diagnostic and prognostic clinical evidence.