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关键词： PLC   自动控制   电气联锁   精确度   安全  

摘要： 产品包装系统是工厂生产过程中最后一道工序,是将成型产品根据客户要求分装至包装袋的一个环节,由各种不同类型的包装机所完成,系统中的包装称应具备称重精度高、速度快、性能稳定、安全可靠等要求。本文以一化工厂由分装25Kg小包装袋的DCS—25型电子称和分装1000Kg大包装袋的DCS-1000型电子称组成的包装系统为例,阐述经过改造后的PLC自动控制系统根据产品分类需包装的要求,满足不同客户对两种产品不同包装规格的需求。

关键词： 贫血   临床诊断   血常规检验   准确性  

摘要： 目的:探讨在贫血患者临床诊断中应用血常规检验的作用。方法:2017年12月-2020年12月收治贫血患者98例,按照贫血类型不同分为两组,各49例。观察组为溶血性贫血;对照组为缺铁性贫血。两组患者均采用血常规检验,观察血常规检验的诊断准确性;比较两组患者血常规指标及血清铁蛋白(SF)水平。结果:血常规检验在观察组患者诊断中的检出率为61.2%,在对照组患者诊断中的检出率为98.0%。观察组红细胞体积分布宽度(RDW)及血红蛋白(Hb)水平均明显低于对照组,平均红细胞血红蛋白含量(MCH)、平均红细胞体积(MCV)、平均红细胞血红蛋白浓度(MCHC)水平均明显高于对照组,差异有统计学意义(P<0.05);两组红细胞计数(RBC)水平比较,差异无统计学意义(P>0.05)。观察组SF水平明显高于对照组,差异有统计学意义(P<0.05)。结论:在贫血患者临床诊断中应用血常规检验,具有较高的诊断准确性,可以为贫血患者治疗方案的制定提供有效参考依据,但在诊断溶血性贫血患者时需进行必要的随访,避免误诊漏诊。

关键词： 市场化   要素回报   城乡收入差距  

摘要： 本文从机理分析和实证检验两个维度,就中国市场化对城乡收入差距之间的影响进行了探讨。基于1997—2015年中国省级数据的实证研究,结果发现:中国市场化与城乡收入差距之间存在非线性的倒U型关系。同时发现,外商投资和金融发展水平对城乡收入差距有显著的缩小效应,而城镇化、城乡教育均等化和产业结构变量在样本期内产生了扩大效应。有助于更好地理解市场化改革的重要意义以及对城乡收入分配格局所产生的影响。

关键词： Retrospection   sonification   radio   sound   narrative   data   interaction design   voice user interfaces  

摘要： We present a first-person, retrospective exploration of two radio sonification pieces that employ narrative scaffolding to teach audiences how to listen to data. To decelerate and articulate design processes that occurred at the rapid pace of radio production, the sound designer and producer wrote retrospective design accounts. We then revisited the radio pieces through principles drawn from guidance design, data storytelling, visualization literacy, and sound studies. Finally, we speculated how these principles might be applied through interactive, voice-based technologies. First-person methods enabled us to access the implicit knowledge embedded in radio production and translate it to technologies of interest to the human-computer-interaction community, such as voice user interfaces that rely on auditory display. Traditionally, sonification practitioners have focused more on generating sounds than on teaching people how to listen;our process, however, treated sound and narrative as a holistic, sonic-narrative experience. Our first-person retrospection illuminated the role of narrative in designing to support people as they learn to listen to data.

关键词： immigration   immigrants   policy   higher education   qualitative research   in-depth interviewing  

摘要： The higher education policy implementation landscape has substantially shaped postsecondary education opportunities for undocumented youth, who are already negatively affected by discriminatory public policies, and institutional agents, who are often unprepared to address their needs. Guided by Bressers's contextual interaction theory that identifies the role of contexts, actor characteristics, and social interactions among implementers in the policy implementation process, the researchers examined the experiences of 45 community college administrators in four states to understand how these elements shaped the participants' role as implementers of policies for undocumented students. Implications are significant given current social and political landscapes and challenges higher education institutional agents encounter in implementing policies that affect undocumented students' educational opportunities.

关键词： gastric cancer   tumor markers   pathological examination   detection rate   role  

摘要： Objective: to analyze the detection rate and role of tumor markers in gastric cancer and pathological examination. Methods: a total of 156 patients were selected from June 2019 to June 2020. 78 patients clinically diagnosed with gastric cancer were included in the observation group, and 78 patients diagnosed with benign gastric lesions during the same period were included in the control group. Tumor markers and pathological examinations were performed for all patients. The positive detection rate of vascular endothelial growth factor and serum tumor markers were compared between the two groups, and the function of tumor markers was analyzed using pathological examination as the standard. Results: the positive rate of VASCULAR endothelial growth factor in the observation group was 91.03%, which was significantly higher than that in the control group (66.07%) (P<0.05). The clinical stage, histological differentiation and lymph node metastasis of gastric cancer in the observation group were not statistically significant compared with pathological examination by tumor markers (P > 0.05). Serum CEA, VEGF, CA125 and CA724 in observation group were significantly higher than those in control group (P<0.05). Conclusion: the application of tumor markers in the examination of gastric cancer can be used to determine the biochemical components and characteristics of different tissues, which is close to the results of pathological examination and has high application value. The combination of the two markers can improve the accuracy of clinical diagnosis of gastric cancer.

关键词： 血液检验   红细胞参数   贫血   鉴别诊断  

摘要： 观察血液检验红细胞参数在贫血鉴别诊断的检验作用。方法:选取我院贫血患者62例作为观察组(2019年9月至2020年12月),选择同期健康体检者62例作为对照组,均进行血液检验红细胞参数,观察检查结果。结果:与对照组相比,观察组RBC、HCT、RDW高,MCH、MVC高,P<0.05;相比于缺铁性贫血,地中海贫血患者RBC、HCT、MCH高,RDW、MVC低,P<0.05。结论:在贫血鉴别诊断中,血液检验红细胞参数效果显著,能有效确诊贫血,且鉴别贫血类型,有利于后续治疗。

关键词： 急慢性白血病   血液临床检验   鉴别诊断   治疗价值  

摘要： 探究血液临床检验于急慢性白血病临床鉴别诊断及临床治疗应用价值。方法:观察病例为我院血液科确诊白血病患者,病例筛选时间2020年1月1日至2021年10月1日,共计110例,其中急性白血病患者55例,设为观察A组,慢性白血病患者55例,设为观察B组,同期选取55例健康志愿者为参照指标,予以血液临床检验,分析血液指标差异性。结果:观察A组、观察B组患者血小板计数、白细胞计数、血红蛋白指标、骨髓原始细胞占比、外周血原始细胞占比、幼稚细胞占比显著异于参照组,观察A组、观察B组血小板计数、白细胞计数、血红蛋白指标、骨髓原始细胞占比、外周血原始细胞占比、幼稚细胞占比存在明显特异性P<0.05;治疗后观察A值、观察B组血液检验指标存在明显特异性P<0.05。结论:急慢性白血病经血液临床检验存在明显差异,可为疾病诊断提供数据支持,明确疾病预后转归情况,应用价值高。

关键词： 微生物检验   医院感染   控制   作用价值  

摘要： 分析微生物检验在控制医院感染中的作用价值。方法:本次试验以住院为主,抽取数量为2000例,纳入均在2018年1月-2021年1月期间,分组对照按干预方法不同平均划分为2组。在控制医院感染中,对对比组实施常规方法,对分析组实施微生物检验。比较2组医院感染发生例数、患者病情严重度及控制情况。结果:2组数据处理后对比医院感染率指标,结论显示最优的为分析组,可见结果达统计分析要求(P<0.05)。2组数据处理后对比轻度感染率指标,结论显示最优的为分析组,可见结果达统计分析要求(P<0.05)。2组数据处理后对比感染控制率指标,结论显示最优的为分析组,可见结果达统计分析要求(P<0.05)。结论:微生物检验在控制医院感染方面价值较高,即可减少感染发生率,切克感染情况予以有效控制,以确保诊疗有效、安全,可做进一步推广。

关键词： 微生物检验   感染性疾病   预防作用   诊断价值  

摘要： 以感染性疾病患者为研究对象,探讨微生物检验在预防和诊断治疗中的实践作用。方法:选取感染性疾病患者共计98例,收治患者时间段介于 2019年01月至2021年01月内,随机均分为2组,将常规抗生素予以治疗的49例病例纳入对照组,施行微生物检验,并基于检验结果合理使用抗生素治疗方案的49例病例纳入观察组,就两组的感染程度及临床治疗实践效果进行评测对比。结果:观察组中、重度感染率经测评相较对照组均居于更低水平,轻度感染率经测评相较对照组均居于更高水平(P<0.05);观察组治疗有效率经评测相较对照组居于更高水平(P<0.05)。结论:微生物检验技术用于感染性疾病诊断实践中,可对患者疾病进行积极预防与有效诊断,对其诊疗效果具有显著改善作用,价值十分突出。