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导烟车除尘系统的研究

机械管理开发 2024年第7期39卷 281-282,320页

作者：王合力赵文凯吕健贾磊太原重工股份有限公司山西太原030024

针对导烟管内残留黄烟的处理方案进行了研究。导烟车在装煤结束后,导套内的黄烟在导套提起的一瞬间便会溢出,产生大量的可视烟尘。为满足环保要求,需要在烟气溢出前将其进行抽吸处理。

关键词：导烟车导套黄烟导入炉头烟干管抽吸

Effects of age on segregation of the X and Y chromosomes in cultured lymphocytes from Chinese men

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Journal of Genetics and Genomics 2009年第8期36卷 467-474页

作者： Yaxian song Qian Chen Zhen Zhang heli Hou Ding Zhang Qinghua shi Laboratory of Molecular and Cell Genetics Hefei National Laboratory for Physical Sciences at Microscale School of Life Sciences University of Science and Technology of China Hefei 230027 China Department of science of Biology Bengbu Medical Collage Bengbu 233000 China

Chromosome malsegregation in binucleated lymphocytes is a useful endpoint to evaluate age effect on genetic stability. However, the investigations on chromosome malsegregation in binucleated lymphocytes from Chinese are scarce. In this study, peripheral blood lym- phocytes were collected from 14 old （60-70 years） and 10 young （22-26 years） healthy Chinese men. To detect malsegregation of the sex chromosomes, multi-color fluorescence in situ hybridization （FIsH） was performed on binucleated lymphocytes, cytokinesis-blocked by cytochalasin B at the first mitosis after phytohaemagglutinin stimulation. Compared with that in young men, a significant increase in frequencies of loss of chromosome X （9.2± 3.2‰ vs. 1.1 ± 0.9‰, P 〈 0.001） and Y （2.5 ± 1.9‰ vs. 0.2± 0.3‰, P 〈 0.001） was found in old men. similarly, nondisjunction of chromosome X （16.5± 3.4‰ vs. 3.5 ± 1.1‰, P 〈 0.001） and Y （7.2 ± 2.6‰ vs. 2.4 ± 1.3‰, P 〈 0.001） occurred more frequently in old men than in young men. Regardless of donor＇s age, nondisjunction is more prevalent than loss for both chromosome X and Y. The frequencies of observed simultaneous malsegregation were relatively higher than the expected, suggest- ing an association between malsegregation. These results indicated that in Chinese men, malsegregation of the sex chromosomes increases with age in an associated fashion, and nondisjunction accounts for the majority of spontaneous chromosome malsegregation.

关键词： chromosome loss nondisjunction chromosome X chromosome Y lymphocyte Chinese men

A study on toxicity of cytoplasmic unagqregated mutant huntingtin to neural cell

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中国组织化学与细胞化学杂志 2004年第3期13卷 365-366页

作者： CuifangYe shanshanHuang YinongZhang heli DivisionofHistologyandEmbryology DepartmentofAnatomyTongjiMedicalCollegeHuazhongUniversityofScienceandTechnologyWuhan430030P.R.China

Effect of deleted pancreatic cancer locus 4 gene transfection on biological behaviors of human colorectal carcinoma cells

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World Journal of Gastroenterology 2005年第3期11卷 348-352页

作者： De-shengXiao Ji-FangWen Jing-heli Zhong-LiangHu HuiZheng Chun-YanFu DepartmentofPathology XiangyaSchoolofMedicineCentralSouthUniversityChangsha410078HunanProvinceChina

AIM: To investigate the effect of deleted pancreatic cancer locus 4 (DPC4) gene transfection on biological behaviors of human colorectal carcinoma cells and the role of DPC4 gene in colorectal carcinogenesis. METHODs: PcDNA3.1-DPC4 plasmid was re-constructed by gene-recombination technology. sW620 cells, a human colorectal carcinoma cell line, were transfected with PcDNA3.1-DPC4 plasmid using lipofectamine transfecting technique. Transfected cells were selected with G418. Expression of smad4 protein was detected in cells transfected with DPC4 gene by immunohistochemistry and Western blot. Biological characterristics of transfected cells were evaluated by population-doubling time and cloning efficiency. Alterations of percentage of s phage cells (s%) and apoptosis rate were determined by flow-cytometry. REsULTs: PcDNA3.1-DPC4 plasmid was constructed successfully. sW620 cells transfected with PcDNA3.1-DPC4 plasmid (DPC4+-sW620 cells) showed a strong intracellular expression of smad4 protein, and the positive signal was localized in cytoplasm and nuclei, mainly in cytoplasm, where the expressions of smad4 protein in sW620 cells transfected with PcDNA3.1 plasmid (PcDNA3.1-sW620 cells) and non-transfected sW620 cells (sW620 cells) were weaker than those in DPC4+-sW620 cells. The population-doubling time in DPC4+-sW620 cells (116 h) was significantly longer than that in sW620 cells (31 h) and PcDNA3.1-sw620 cells (29 h) (Ps of DPC4+-sW620 cells (12%) were markedly lower than those of sW620 cells (69%) and PcDNA3.1-sw620 cells (67%) (PsW620 cells and PcDNA3.1-sw620 cells, the Go-G1% of DPC4+-sW620 cells was obviously higher and the s% was markedly lower (Psis rate of DPC4+-sW620 cells was significantly higher than that of sW620 cells and PcDNA3.1-sW620 cells. CONCLUsION: PcDNA3.1-DPC4 plasmid can be successfully re-constructed and stably transfected into human sW620cells, thereby the cells can steadily expr

关键词： Colorectal Carcinoma DPC4 gene Transfection Apoptosis

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锌浸渣浮选银精矿还原焙烧-低酸浸出脱锌

有色金属（冶炼部分） 2024年第7期 25-32页

作者：黄玉柱裴双刘宇倩周合理朱晓红胡宇杰湖南工业大学材料与先进制造学院湖南株洲412007

以某湿法炼锌厂产出的锌浸渣浮选银精矿为原料,采用回转炉还原焙烧—低酸浸出工艺进行脱锌研究。结果表明:在碳粉加入量10%、焙烧温度600℃、时间120 min、原料粒度-0.1 mm、回转炉转速5 r/min的条件下,铁酸锌还原焙烧分解效果最优,焙... 详细信息

以某湿法炼锌厂产出的锌浸渣浮选银精矿为原料,采用回转炉还原焙烧—低酸浸出工艺进行脱锌研究。结果表明:在碳粉加入量10%、焙烧温度600℃、时间120 min、原料粒度-0.1 mm、回转炉转速5 r/min的条件下,铁酸锌还原焙烧分解效果最优,焙烧产物中可溶锌率达到85.83%。在硫酸终点pH为2、液固比5 mL/g、浸出温度70℃、浸出时间90 min优化条件下,对焙烧产物进行选择性浸出,锌和铁的浸出率分别为84.23%和34.71%。浸出渣中未溶解铁锌氧化物主要为还原焙烧过程中团聚成块的大颗粒及被硫酸铅熔化包裹形成的颗粒。

关键词：锌浸渣浮选银精矿铁酸锌还原焙烧低酸浸出脱锌工艺

sensitivity of supplementation of thyroid hormone on treatmentof idiopathic short-stature children during therapy withrecombinant human growth hormone

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Frontiers of Medicine 2018年第5期12卷 580-585页

作者： Wei Wang shuqin Jiang Zhirui Cui Xiangyang Luo Lingli shi heli Zheng Pediatric Endocrinology Clinic Third Affiliated Hospital of Zhengzhou University Zhengzhou 450000 China Third Affiliated Hospital ofZhengzhou University Zhengzhou 450000 China

This study aimed to evaluate the effects of thyroid hormone supplementation on growth rate of children with idiopathic short stature (Iss) and low-normal serum free thyroxine FT4 who were receiving growth hormone therapy. We selected 64 prepubertal children with FT4 levels in the lowest third of the normal range as the lower FT4 group, and these children were divided randomly into two subgroups: L-thyroxine (L-T4)-treated subgroup was treated with L-T4 (0.5–3.0 g/(kg·d)) from the beginning of the study, and the non-L-T4-treated subgroup received placebo. We also selected 39 Iss children with FT4 in the upper two-thirds of the normal range as the higher FT4 group. During the first year, the lower FT4 group featured lower FT3, FT4, thyroid stimulating hormone (TsH), and insulin-like growth factor-I standard deviation score (IGF-I sDs) and significantly lower height velocity (HV) compared with the higher FT4 group. However, in the lower FT4 group, the L-T4-treated subgroup presented higher FT4, FT3, TsH, and IGF-I sDs concentrations and significantly higher HV compared with children in the non-L-T4-treated subgroup. In children with Iss, the negative effect of thyroid hormone deficiency on growth rate should be considered when FT4 level lies in the low-normal range prior to recombinant human growth hormone treatment.

关键词： therapeutic idiopathic short-stature children free T4 the first year recombinant human growth hormone

血清AMH、INHB联合经阴道彩超对IVF-ET助孕患者助孕成功的预测价值

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东南大学学报（医学版） 2024年第5期43卷 711-716页

作者：毛剑尚琴琴朱丽吕双军刘何利河北省沧州中西医结合医院超声科河北沧州061000 河北省沧州中西医结合医院生殖医学科河北沧州061000 河北省沧州中西医结合医院超声一科河北沧州061000 河北省沧州中西医结合医院体检科河北沧州061000

目的:探讨体外受精-胚胎移植(IVF-ET)助孕患者血清中抗苗勒氏管激素(AMH)、抑制素B(INHB)联合经阴道彩超预测患者助孕成功的价值。方法:收集本院2019年1月至2023年1月期间进行IVF-ET助孕的160例患者作为研究对象,根据是否助孕成功将其... 详细信息

目的:探讨体外受精-胚胎移植(IVF-ET)助孕患者血清中抗苗勒氏管激素(AMH)、抑制素B(INHB)联合经阴道彩超预测患者助孕成功的价值。方法:收集本院2019年1月至2023年1月期间进行IVF-ET助孕的160例患者作为研究对象,根据是否助孕成功将其分为未妊娠组(n=86)和妊娠组(n=74)。比较两组血清AMH、INHB水平和阴道彩超结果;ROC曲线分析血清AMH、INHB联合经阴道彩超对IVF-ET助孕患者助孕成功的预测价值;多因素Logistic回归分析IVF-ET助孕患者助孕成功的影响因素。结果:与妊娠组相比,未妊娠组获卵数、AMH、INHB显著降低(Pstic回归分析结果显示,获卵数、AMH、INHB、子宫内膜厚度是IVF-ET助孕患者助孕成功的影响因素(P<0.05)。结论:血清AMH、INHB联合经阴道彩超对IVF-ET助孕患者是否成功妊娠具有一定的预测价值。

关键词：抗苗勒氏管激素抑制素B 阴道彩色超声体外受精-胚胎移植助孕

经阴道彩色多普勒超声联合血清β-HCG、孕酮检测对IVF-ET术后宫内外复合妊娠的诊断价值

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中国妇幼健康研究 2024年第10期35卷 63-67页

作者：刘何利尚琴琴吕双军朱丽毛剑河北省沧州中西医结合医院超声二科河北沧州061000 河北省沧州中西医结合医院生殖医学科河北沧州061000 河北省沧州中西医结合医院体检科河北沧州061000 河北省沧州中西医结合医院超声一科河北沧州061000

目的探讨经阴道彩色多普勒超声(TVCDs)联合血清人绒毛膜促性腺激素(β-HCG)、孕酮检测对体外受精-胚胎移植(IVF-ET)术后宫内外复合妊娠(HP)的诊断价值。方法选取2021年1月至2022年6月于我院行IVF-ET术后发生HP的94例孕妇作为研究组,另... 详细信息

目的探讨经阴道彩色多普勒超声(TVCDs)联合血清人绒毛膜促性腺激素(β-HCG)、孕酮检测对体外受精-胚胎移植(IVF-ET)术后宫内外复合妊娠(HP)的诊断价值。方法选取2021年1月至2022年6月于我院行IVF-ET术后发生HP的94例孕妇作为研究组,另选取同期80例于本院行IVF-ET术后正常妊娠者作为对照组。采用受试者工作特征(ROC)曲线分析血清β-HCG和孕酮对IVF-ET术后HP的诊断价值;采用四表格法分析TVCDs、TVCDs联合血清β-HCG和孕酮对IVF-ET术后HP的诊断价值;采用Kappa检验分析TVCDs以及三者联合诊断IVF-ET术后HP与临床诊断的一致性。结果采用TVCDs检查HP患者宫腔内可见妊娠囊,同时附件区见妊娠囊或异位妊娠包块,其中直接征象37例,间接征象48例;研究组血清β-HCG、孕酮水平均低于对照组(t值分别为14.881和14.705,Ps单独诊断IVF-ET术后HP的灵敏度为75.53%,特异度为85.00%,准确度为79.88%,与临床诊断一致性为中度(Kappa值=0.599,Ps联合血清β-HCG、孕酮诊断IVF-ET术后HP的灵敏度为95.74%,特异度为77.50%,准确度为87.35%,与临床诊断一致性较高(Kappa值=0.742,Ps联合血清β-HCG、孕酮对IVF-ET术后宫内外复合妊娠具有较高的诊断价值。

关键词：经阴道彩色多普勒超声人绒毛膜促性腺激素孕酮体外受精-胚胎移植宫内外复合妊娠

燃煤电厂氨法碳捕集浆液中捕集产物结晶行为研究

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动力工程学报 2024年第10期44卷 1632-1639页

作者：马双忱高和利陈柳潼贾俊樊帅军陈文通王小华华北电力大学环境科学与工程系河北保定071003 深能保定发电有限公司河北保定072150

以燃煤电厂碳排放为背景,利用氨水吸收二氧化碳的结晶过程作为研究对象,基于经典的成核理论,采用温度、pH和电导率法研究了改变温度、搅拌转速、添加盐类添加剂前后碳酸氢铵结晶速率的变化,并通过扫描电镜(sEM)和X射线衍射(XRD)分析了... 详细信息

以燃煤电厂碳排放为背景,利用氨水吸收二氧化碳的结晶过程作为研究对象,基于经典的成核理论,采用温度、pH和电导率法研究了改变温度、搅拌转速、添加盐类添加剂前后碳酸氢铵结晶速率的变化,并通过扫描电镜(sEM)和X射线衍射(XRD)分析了有无添加剂对生成碳酸氢铵结晶的影响。结果表明:在水浴温度为25℃,搅拌转速为550 r/min的条件下,碳酸氢铵的结晶反应受到添加剂种类的影响,加入硫酸根离子会减缓反应的进行,加入氯化镁可以加快结晶的产生速率,并产生结构稳定的晶体。

关键词：碳酸氢铵结晶电导率添加剂二氧化碳