mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
金融海啸冲击下两代农民工就业选择差异研究

基于对全国2606份农民工个案调查,研究金融海啸冲击下提前返乡的两代农民工在新情况下的就业选择差异.首先,结合农民工代际差异的一般特征,对"今后打算"、"在家乡的就业方向"等农民工选择情况进行了对照描述统计;其次对"今后打算"、"留家打算"等问题进行显著性检验,验证其是否存在显著性差异.研究结果显示两代农民工在"是否留继续回城务工"、"在家乡的就业方向"等方面存在显著的代际差异,相关就业政策制定应该更加具有针对性.
2009年广东甜玉米产业发展现状分析

介绍了国内外甜玉米产业的发展情况,广东省甜玉米产业产量、分布、出口、产业化经营和工序现状,提出广东省甜玉米产业在发展中存在的问题,并提出进一步发展甜玉米产业的对策建议,以期为广东省乃至我国甜玉米产业的发展方向提供参考.
2009年广东水稻产业发展现状分析

广东是全国13个粮食主产省之一,稻谷产量全国排名第9名.2008年,从产出情况看,受自然灾害、劳动和物质投入减少等因素的影响,广东水稻总产和单产下降,播种面积保持平稳;从区域分布看,广东水稻生产区域差异明显,其中东西两翼稻谷播种面积、总产和单产都出现了下滑;从供需情况看,广东省稻谷的自给率为52.9%,预计未来两年广东稻谷的供需缺口将达到870多万t;从要素贡献率看,广东省水稻产业的增长主要依靠科技进步,科技进步贡献率达到46.38%,且科技进步的作用在逐步增强.
花生新品种湛油26的选育

湛油26是湛江市农科所以(湛油30×CS49)F6作母本、粤油79作父本杂交选育而成的花生新品种.该品种具有高产稳产、优质、高抗锈病和叶斑病以及耐旱、耐涝、适应性广等优点,在2006年广东省花生品种区域试验中,平均每667 m~2产量为267.72 kg,比对照种汕油523增产9.91%,增产达极显著水平;在2007年广东省花生品种区域试验中,平均每667 m~2产量为271.48 kg,比对照种汕油523增产5.54%,增产亦达极显著水平.该品种于2009年1月通过广东省农作物品种审定.
水稻精确定量栽培的增产效果与经济效益分析

为验证水稻精量栽培在广东省的示范效果,选择3个示范片以常规栽培作对照进行比较试验.结果表明:精量栽培平均每667 m~2产量为509.75 kg,比对照增产37.53 kg,增产率7.95%;精量栽培比对照节水25.40%,节氮8.24%;精量栽培每667 m~2产值为1 121.45元,比对照增加收益82.57元,增加收益率7.95%;精量栽培每667 m~2成本为570.52元,比对照节本29.52元,节本率4.92%;精量栽培每667 m~2纯收益为550.93元,比对照增加纯收益112.09元,增加纯收益率25.54%.因此,水稻精量栽培增收节支效果显著.
坡岗地木薯营养调控技术研究

采用田间试验研究了木薯营养调控技术.结果表明,在氮磷钾用量相等的情况下,不同营养调控措施对木薯叶绿素含量、茎基部粗度无显著影响;与常规施肥处理相比,配方肥处理有一定增产效果,配方肥+调理剂、配方肥+有机肥可较显著增加单株结薯数与木薯产量,每667 m~2分别提高效益91～98、17～47元,其他处理表现一般.说明在木薯营养调控中以配方肥配施调理剂、有机肥效果较好.
双间置空肠在胰十二指肠切除术中的应用

胰十二指肠切除术是胰头癌和壶腹部恶性肿瘤的治疗首选.以往各项研究均采用同-段空肠与胰腺、胆总管进行吻合.本文作者将双问置空肠应用于胰十二指肠切除术,使胰十二指肠切除术消化道重建更加符合生理学.
多囊卵巢综合征胰岛素抵抗研究进展

多囊卵巢综合征(PCOS)是一种常见的异质性内分泌疾病,其病因尚不清楚,多数学者认为遗传和环境因素在其发病中起一定作用.PCOS不仅是生殖疾病,而且是一种多系统综合征,流行病学调查显示:PCOS患者发生2型糖尿病、高血压、冠心病、子宫内膜癌等疾病的风险明显增加,胰岛素抵抗及其伴随的高胰岛素血症是PCOS患者重要的病理生理改变,可能在PCOS的发生发展中起关键的作用.
国审小麦新品种周麦23丰产性、稳产性、适应性及产量结构分析

利用黄淮南片水地小麦良种区域试验和河南省小麦良种区域试验汇总资料,采用多种分析方法对周麦23的丰产性、稳产性、适应性及产量构成进行分析比较.结果表明,国审小麦新品种周麦23号具有丰产性突出,稳产性好,适应性广,结构合理的特点.广泛适应于河南省及黄淮南片麦区晚、中茬种植,具有较高的产量潜力.
黑荆树半同胞子代林幼林测定及优良家系初步选择

观测了黑荆树的3年生半同胞子代幼林的树高、胸径(地径)、冠幅等的年生长规律及生长量,并进行了变异分析、方差分析和相关分析,选出胸径作为优良家系初步选择的指标;采用加权系数法初步选出95个优良家系.
小儿右肾滑膜肉瘤一例

患儿,女,1岁.因无意间发现右腹部包块7 d入院.检查:WBC:14.5 x 10~9/L,HB:91.4 g/L,尿常规正常.CT:右肾正常形态消失,密度不均匀,边界清楚,肝脏,下腔静脉受压,腹膜后淋巴结不大,诊断为NWTS-5Ⅱ期(图1).限期行右肾肿瘤切除术,术中见肿瘤来自右肾,越过中线,肠管等腹腔内器官被挤向左侧,切面灰白或灰红色,鱼肉样大片出血及坏死,质中等.
Comparison of two nutritional assessment methods in gastroenterology patients

AIM: To investigate and compare efficacy and differences in the nutritional status evaluation of gastroenterology patients by application of two methods: subjective global assessment (SGA) and nutritional risk index (NRI).METHODS: The investigation was performed on 299 hospitalized patients, aged 1884 years (averagelife span 55.57 ± 12.84), with different gastrointestinal pathology, admitted to the Department of Gastroenterohepatology,Clinical and Hospital Center"Bezanijska Kosa" during a period of 180 d. All the patients, after being informed in detail about the study and signing a written consent, underwent nutritional status analysis, which included two different nutritional indices: SGA and NRI, anthropometric parameters, bioelectrical impedance analysis, and biochemical markers,within 24 h of admission.RESULTS: In our sample of 299 hospitalized patients,global malnutrition prevalence upon admission varied from 45.7% as assessed by the SGA to 63.9% by NRI. Two applied methods required different parameters for an adequate approach: glucose level (5.68 ±1.06 mmol/L vs 4.83 ± 1.14 mmol/L, F = 10.63, P =0.001); body mass index (26.03 ± 4.53 kg/m~2 vs 18.17 ± 1.52 kg/m~2, F = 58.36, P < 0.001); total body water (42.62 ± 7.98 kg vs 36.22 ± 9.32 kg, F = 7.95, P =0.005); basal metabolic rate (1625.14 ± 304.91 kcal vs 1344.62 ± 219.08 kcal, F = 9.06, P = 0.003) were very important for SGA, and lymphocyte count was relevant for NRI: 25.56% ± 8.94% vs 21.77% ± 10.08%, F =11.55, P = 0.001. The number of malnourished patients rose with the length of hospital stay according to both nutritional indices. The discriminative function analysis (DFA) delineated the following parameters as important for prediction of nutritional status according to SGA assessment:concentration of albumins, level of proteins,SGA score and body weight. The DFA extracted MAMC,glucose level and NRI scores were variables of importance for the prediction of whether admitted patients would be classified as well or malnourished.CONCLUSION: SGA showed higher sensitivity to predictor factors. Assessment of nutritional status requires a multidimensional approach, which includes different clinical indices and various nutritional parameters.
Surgically treated primary malignant tumor of small bowel: A clinical analysis

AIM: To evaluate the clinical presentation, treatment and survival of patients with primary malignant tumor of small bowel (PMTSB). METHODS: Clinicopathologic data about 141 surgically treated PMTSB patients (91 males and 50 females) at the median age of 53.5 years (range 23-79 years) were retrospectively analyzed. RESULTS: The most common initial clinical features of the patients were intermittent abdominal discomfort or vague abdominal pain (67.4%), abdominal mass (31.2%), bowel obstruction (24.1%), hemotochezia (21.3%), jaundice (16.3%), fever (14.2%), coexistence of bowel perforation and peritonitis (5.7%), coexistence of gastrointestinal bleeding and shock (5.0%), and intraabdominal bleeding (1.4%). Ileum was the most common site of tumor (44.7%), followed by jejunum (30.5%) and duodenum (24.8%). PMTSB had a nonspecific clinical presentation. Segmental bowel resection ( n = 81) was the most common surgical procedure, followed by right hemicolectomy ( n = 15), pancreaticoduodenectomy ( n = 10), and others ( n = 19). Twenty-seven adenocarcinoma patients and 13 malignant lymphoma patients received adjuvant chemotherapy with 5-fluorouracil and cyclophosphamide, adriamycin, vincristine and prednisone, respectively. Information about 120 patients was obtained during the follow-up. The median survival time of PMTSB patients was 20.3 mo. The 1-, 3- and 5-year survival rate was 75.0% (90/120), 40.0% (48/120) and 20.8% (25/120), respectively. Adenocarcinoma was found in 73.7% (42/57), 21.1% (12/57) and 15.8% (9/57) of the patients, respectively. Gastrointestinal stromal tumor was observed in 80.0% (20/25), 72.0% (18/25) and 36.0% (9/25) of the patients, respectively. Carcinoid was detected in 100.0% (15/15), 80.0% (12/15) and 46.7% (7/15) of the patients, respectively. Malignant lymphoma was demonstrated in 69.2% (9/13), 30.8% (4/13) and 0% (0/13) of the patients, respectively. CONCLUSION: En bloc resection is the principal therapy for most PMTSB and chemotherapy is the important treatment modality for malignant lymphoma and other malignant tumors of small bowel which cannot be radically removed.
高龄患者血液透析治疗的临床管理

近年来我国老年人口激增,尤其是高龄(＞75岁)老人明显增多.高龄人群中因慢性肾脏病和其他疾病导致的慢性.肾衰竭(CRF)病例越来越多,对血液透析(HD)治疗的需求也越来越高.以往关于CRF高龄老人HD治疗的争议较大,主要是医疗资源分配和"HD不耐受"问题.
友通DR开机故障检修一则

故障现象友通DR不能开机,报错Com err.故障分析及检修Com err:是DR高压发生器Interface板的故障错误代码.检查Interface板,并没有发现电路板上有明显的烧坏迹象,但Interface板上布满灰尘.测量Inter-face板各个测量点,发现一路-12V的电压只有-6V.通过电路分析,考虑电路板上的整流模块故障.
急性颈脊髓损伤并发抗利尿激素分泌异常综合征的护理

抗利尿激素分泌异常综合征(SIADH)是由于颅脑损伤后影响下丘脑-神经垂体功能,促使精氨酸加压素释放而不受渗透压等调节机制的控制而导致水潴留,尿排钠增多,出现以稀释性低钠血症等临床表现为主的一组综合征.
门诊处方不合理用药分析

对我院2008年1月～2008年12月门诊处方进行统计分析,为临床合理用药提供参考,报道如下.资料与方法随机抽取我院2008年1月～2008年12月门诊处方20 000份,处方基本覆盖全院各专科,具有一定代表性.
血脂异常的概念及类型(续1)

1 血脂异常的概念血脂异常主要是指血浆或血清中的总胆固醇(TC)、低密度脂蛋白一胆固醇(LDL-C)、甘油三酯(TG)水平升高和(或)高密度脂蛋白-胆固醇(HDL-C)水平降低.血脂异常作为一类常见的疾病,临床上通常将其称之为高脂血症(hyperlipidemia),也可称高脂蛋白血症(hyperlipoproteinemia)或脂质异常血症(dyslipidemia).
大肠癌中PTTG的表达及意义

目的 探讨垂体肿瘤转化基因(pituitary tumor transforming gene,PTTG)在大肠癌中的表达及其与大肠癌临床病理特征的关系.方法 采用免疫组化MaxVision两步法对63例大肠癌组织及距癌灶3 cm以外的癌旁组织、距癌灶10 cm以外的正常组织中PTTG进行检测.结果  PTTG在癌组织中表达的阳性率明显高于癌旁和非癌组织(P＜0.01、P＜0.01);并在不同年龄组(＜60岁和≥60岁)、不同组织学分级(高分化和中、低分化)、有或无淋巴结转移及肿瘤不同浸润深度(肌层和浆膜层)病例中表达差异有显著性(P＜0.05,P＜0.01,P＜0.05,P＜0.01).结论  PTTG在大肠癌的发生、发展中起重要作用;可以作为临床判断大肠癌生物学行为有用的分子生物学指标.
Gender differences of low-dose aspirin-associated gastroduodenal ulcer in Japanese patients

AIM: To clarify the gender differences about the clinical features and risk factors of low-dose aspirin (LDA) (81-100 mg daily)-associated peptic ulcer in Japanese patients. METHODS: There were 453 patients under treatment with LDA (298 males, 155 females) who underwent esophagogastroduodenoscopy at the Department of Gastroenterology and Hepatology of Hiratsuka City Hospital between January 2003 and December 2007. They had kept taking the LDA or started treatment during the study period and kept taking LDA during the whole period of observation. Of these, 119 patients (87 males, 32 females) were diagnosed as having LDA-associated peptic ulcer. We examined the clinical factors associated with LDA-associated peptic ulcer in both sexes. RESULTS: A history of peptic ulcer was found to be the risk factor for LDA-associated peptic ulcer common to both sexes. In female patients, age greater than 70 years (prevalence ORs 8.441, 95% CI: 1.797-33.649, P = 0.0069) was found to be another significant risk factor, and the time to diagnosis as having LDA-associated peptic ulcer by endoscopy was significantly shorter than that in the male patients ( P = 0.0050). CONCLUSION: We demonstrated gender differences about the clinical features and risk factors of LDA-associated peptic ulcer. Special attention should be paid to aged female patients taking LDA.
Diabetic factors associated with gastrointestinal symptoms in patients with type 2 diabetes

AIM: To determine whether gastrointestinal (GI) symptoms are more frequent in type 2 diabetic patients and to examine which diabetic factors are associated with the symptoms. METHODS: Consecutive subjects with diabetes and age-/gender-matched normal controls were recruited for this study. GI symptoms were assessed using a structured questionnaire divided into two GI symptom categories (upper and lower GI symptoms), and consisting of 11 individual symptoms. In the diabetic patient group, diabetic complications including peripheral neuropathy, nephropathy and retinopathy, glycosylated hemoglobin (HbA1c) level and diabetes duration were evaluated. RESULTS: Among the total 190 diabetic patients and 190 controls enrolled, 137 (72%) of the diabetic patients and 116 (62%) of the controls had GI symptoms. In the diabetic patient group, 83 (43%) had upper GI symptoms and 110 (58%) lower GI symptoms; in the control group, 59 (31%) had upper GI symptoms and 104 (55%) lower GI symptoms. This difference between the two groups was significant for only the upper GI symptoms ( P = 0.02). Among the diabetic factors, the HbA1c level was the only independent risk factor for upper GI symptoms in the multiple logistic regression analysis (odds ratio = 2.01, 95% confidence interval: 1.02-3.95). CONCLUSION: Type 2 diabetes was associated with an increased prevalence of upper GI symptoms and these symptoms appeared to be independently linked to poor glycemic control, as measured by the HbA1c levels.
全面实施我国会计人才战略

执政兴国,惟在得人.当今和未来的国际竞争,说到底是人才竞争.谁拥有更多更好的人才,谁就能在激烈的竞争中取得主动,赢得未来.因此世界各国,尤其是发达市场经济国家,都十分重视并不断加强本国人才建设.今年2月,中共中央政治局在研究讨论<国家中长期人才发展规划纲要(2010-2020年)>时强调指出,各级党委和政府要把人才作为经济社会发展的第一资源摆在突出位置,加强人才资源能力建设,推动人才结构战略性调整.会计人才是我国人才队伍的重要组成部分,加强会计人才能力建设,增强会计人才专业胜任能力,是贯彻落实国家中长期人才发展规划纲要的重要举措,是适应国家经济社会发展、提升企业国际竞争力、进一步推进会计改革事业的战略需要,对于促进我国经济社会发展有着不可或缺的作用.
Male mate choice in Tibetan macaques Macaca thibetana at Mt. Huangshan, China

Though females are generally more selective in mate choice, males may also benefit from mate choice if male reproductive success is limited by factors other than simply the number of female mates, and if females differ in short-term reproductive potential. We studied male mate choice in a free-ranging troop of Tibetan macaques Macaca thibetana at Mt. Huangshan,China, from August 2007 to April 2008. We employed focal animal sampling and all occurrence sampling to record sexual related behaviors. Eight adult females were divided into three female quality categories according to the females' age, rank and parity.Using male mating effort as a proxy for male mate choice, we found that males do distinguish female quality and show time-variant mating strategies. Specifically, females with dominant rank, high fecundity, and middle age attracted significantly more males. Our results suggest that female short-term reproductive potential appears to be an important variable in determining male mating effort. Male Tibetan macaques do exercise mate choice for higher quality females as well as reduce useless reproductive cost, which is consistent with the direct benefits theory of mate choice.
左肺动脉吊带畸形1例

患儿,男,4月21 d.因咳嗽7 d、气喘4 d入院.当地医院诊断为"支气管肺炎"合并"心力衰竭",给予头孢唑肟抗感染、西地兰强心和速尿治疗,患儿咳嗽、气喘仍无明显好转而转入我院.患儿为第1胎第1产,足月剖宫产,新生儿期健康,于生后1个月出现咳、喘,当地医院诊断先天性喉喘鸣,予头孢类抗生素治疗后症状恢复慢,且反复出现.
黄连解毒汤中栀子苷在正常及脑缺血大鼠体内药动学研究

目的 比较黄连解毒汤中栀子苷在正常和脑缺血大鼠体内的动力学过程.方法 正常大鼠及脑缺血大鼠ig黄连解毒汤后不同时间采血,用HPLC法测定栀子苷的血药浓度,3P87软件拟合药动学参数.结果 脑缺血及正常大鼠栀子苷药动学符合一室模型.脑缺血及正常状态下大鼠ig黄连解毒汤后,栀子苷在脑缺血及正常状态下体内的AUC分别为(15.819±5.228)、(11.395士3.111)μg·h·mL~(-1),t_(1/2 ke) 分别为(4.704±1.850)、(3.695±1.595)h,C_(max)分别为(2.135±0.202)、(1.677±0.621)μg/mL.结论 栀子苷在脑缺血状态下的血药浓度及吸收效果优于正常状态,在体内停留的时间较长,消除较慢,反映了黄连解毒汤临床对症治疗脑缺血疾病的合理性,体现了方证对应的思想.
Development of a low-cost detection method for miRNA microarray

MicroRNA (miRNA) microarray is a powerful tool to explore the expression profiling of miRNA. The current detection method used in miRNA microarray is mainly fluorescence based, which usually requires costly detec-tion system such as laser confocal scanner of tens of thou- sands of dollars. Recently, we developed a low-cost yet sensitive detection method for miRNA microarray based on enzyme-linked assay. In this approach, the biotinylated miRNAs were captured by the corresponding oligonucleo-tide probes immobilized on microarray slide; and then the biotinylated miRNAs would capture streptavidin-con-jugated alkaline phosphatase. A purple-black precipi-tation on each biotinylated miRNA spot was produced by the enzyme catalytic reaction. It could be easily detected by a charge-coupled device digital camera mounted on a microscope, which lowers the detection cost more than 100 fold compared with that of fluorescence method. Our data showed that signal intensity of the spot correlates well with the biotinylated miRNA concentration and the detection limit for miRNAs is at least 0.4 fmol and the detection dynamic range spans about 2.5 orders of magni- tude, which is comparable to that of fluorescence method.
Distributions of typical contaminant species in urban short-term storm runoff and their fates during rain events: A case of Xiamen City

The pollutants in urban storm runoff, which lead to an non-point source contamination of water environment around cities, are of great concerns. The distributions of typical contaminants and the variations of their species in short term storm runoff from different land surfaces in Xiamen City were investigated. The concentrations of various contaminants, including organic matter, nutrients (i.e., N and P) and heavy metals, were significantly higher in parking lot and road runoff than those in roof and lawn runoff. The early runoff samples from traffic road and parking lot contained much high total nitrogen (TN 6-19 mg/L) and total phosphorus (TP 1-3 mg/L). A large proportion (around 60%) of TN existed as total dissolved nitrogen (TDN) species in most runoff. The percentage of TON and the percentage of total dissolved phosphorus remained relatively stable during the rain events and did not decrease as dramatically as TN and TP. In addition, only parking lot and road runoff were contaminated by heavy metals, and both Pb (25-120 μg/L) and Zn (0.1-1.2 mg/L) were major heavy metals contaminating both runoff. Soluble Pb and Zn were predominantly existed as labile complex species (50%-99%), which may be adsorbed onto the surfaces of suspended particles and could be easily released out when pH decreased. This would have the great impact to the environment.
Community analysis of ammonia-oxidizing bacteria in activated sludge of eight wastewater treatment systems

We investigated the communities of ammonia-oxidizing bacteria (AOB) in activated sludge collected from eight wastewater treatment systems using polymerase chain reaction (PCR) followed by terminal restriction fragment length polymorphism (T-RFLP), cloning, and sequencing of the α-subunit of the ammonia monooxygenase gene (amoA). The T-RFLP fingerprint analyses showed that different wastewater treatment systems harbored distinct AOB communities. However, there was no remarkable difference among the AOB T-RFLP profiles from different parts of the same system. The T-RFLP fingerprints showed that a full-scale wastewater treatment plant (WWTP) contained a larger number of dominant AOB species than a pilot-scale reactor. The source of influent affected the AOB community, and the WWTPs treating domestic wastewater contained a higher AOB diversity than those receiving mixed domestic and industrial wastewater. However, the AOB community structure was little affected by the treatment process in this study. Phylogenetic analysis of the cloned amoA genes clearly indicated that all the dominant AOB in the systems was closely related to Nitrosomonas spp. not to Nitrosospira spp. Members of the Nitrosomonas oligotropha and Nitrosomonas communis clusters were found in all samples, while members of Nitrosomonas europaea cluster occurred in some systems.
Size, composition, and mixing state of individual aerosol particles in a South China coastal city

Aerosol samples were collected in summer in Macao, a coastal city of the Pearl River Delta Region in China. Morphology, size, elemental composition, and mixing state of individual aerosol particles were determined by scanning electron microscopy coupled energy dispersive X-ray (SEM/EDX) and transmission electron microscopy (TEM). Based on the morphologies of 5711 aerosol particles, they consist of soot (32%), mineral (17%), secondary(22%), and unknown fine particles (29%). The sizes of these particles were mostly distributed between 0.1 and 0.4 μm. Compositions of 202 mineral particles were obtained by SEM/EDX. Mineral particles were mainly classified into three types: Si-rich, Ca-rich, and Na-rich. The compositions of typical mineral particles can indicate their sources in sampling location. For example, mineral particles, collected along the main street, were associated with trace amounts of heavy metals, such as Zn, Ti, Mn, Ba, Pb, and As. TEM observations indicate that most Na-rich particles were aged sea salt particles (e.g., Na_2SO_4 and NaNO_3) which formed through heterogeneous chemical reactions between sea salt and acidic gases. Additionally, aging time of soot was short in Macao due to high humidity, high temperature, and high levels of sunlight in Macao. Most of soot and fine mineral dust particles were internally mixed with secondary particles.
索拉非尼治疗前后原发性肝癌患者外周血T淋巴细胞和NK细胞的变化及临床意义

目的 观察索拉非尼治疗对原发性肝癌患者免疫状况的影响.方法 采用流式细胞仪测定治疗前原发性肝癌患者与健康人外周血中T淋巴细胞(CD3~+)及其亚群(CD3~+CD4~+、CD3~+CD8~+)和NK细胞(CD16~+CD56~+)的差别,并将索拉非尼治疗前后原发性肝癌患者外周血淋巴细胞的水平进行对比分析.结果 治疗前原发性肝癌患者较健康人外周血CD3~+、CD4~+、CD4~+/CD8~+、NK细胞下降(P<0.05),CD8~+则上升(P<0.05).而索拉非尼治疗后原发性肝癌患者外周血CD3~+、CD4~+、CD4~+/CD8~+、NK细胞有上升,CD8~+则下降,差异有统计学意义(P<0.05).结论 原发性肝癌患者细胞免疫功能低下,索拉非尼为多靶点抗肿瘤药物,对原发性肝癌有效,在多环节阻断肿瘤信号传导的同时可以改善患者的免疫状况,索拉非尼治疗原发性肝癌从免疫学角度考虑有效可行,对原发性肝癌患者的免疫功能恢复起到了一定的作用.
淋巴结外Rosai-Dorfman病临床病理分析

目的 探讨结外Rosai-Dorfman病的临床病理学特征.方法 对6例结外Rosai-Dorfman病行HE染色和免疫组化染色观察.结果 病变组织由大量淋巴细胞、浆细胞及S-100蛋白和CD68标记阳性的组织细胞构成,并呈"明暗"相间的组织学特征,伴有纤维化.组织细胞体积较大,呈多边形或椭圆形,胞质丰富,嗜酸或透亮,胞核圆形或卵圆形,核膜光滑,呈泡状核,有小的嗜碱性核仁.部分组织细胞内含多个完整的淋巴细胞、浆细胞和其他炎细胞.结论 结外Rosai-Dorfman病是一种少见的组织细胞增生性病变,有特征性的病理学特点,注意与朗格汉斯细胞组织细胞增生症等病变鉴别.
原发性腹膜后脂肪肉瘤24例诊疗与预后

目的 探讨PRPLS的临床特点,完善相应的诊疗对策,提高疗效.方法 收集24例病理确诊的原发性腹膜后脂肪肉瘤患者资料,在临床特征、诊断和治疗方面进行回顾性分析.结果 PRPLS临床表现主要为腹部包块58.3%(14/24),腹胀41.7%(10/24).B超和CT检查均能检出肿瘤,24例患者均接受剖腹探查手术治疗.其中首次手术肿瘤完整切除者有16例,3年生存率为87.5%(14/16),5年生存率为62.5%(10/16);部分切除肿瘤者有6例,3年生存率33.3%(2/6),5年生存率16.7%(1/6);有2例患者仅行术中单纯活检,分别于术后5个月以及13个月死亡.结论 影像学检查是PRPLS诊断和术后复查的重要手段;应重视首次手术治疗,争取完整切除肿瘤;无法完整切除者亦应争取姑息切除.对复发病例仍以早发现和手术治疗为主.
NFKB1基因多态性与溃疡性结肠炎相关性研究

目的 探讨NFκB1 基因单核苷酸多态性rs3774963 C>G和rs11722146 A>G与溃疡性结肠炎的相关性.方法 采用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)方法检测149例溃疡性结肠炎患者组和168例健康对照组NFκB1 基因多态性.结果 在rs3774963 C>G位点,溃疡性结肠炎组GG基因型占53.0%,明显高于对照组(38.7%),差异具有统计学意义( P =0.005).G等位基因频率(73.2%)亦明显高于对照组61.9%),差异具有统计学意义( P =0.003).在rs11722146 A>G位点,两组间基因型和等位基因频率差异无统计学意义( P >0.05).两位点溃疡性结肠炎不同分型基因型和等位基因频率差异无统计学意义( P >0.05).结论 NFκB1 基因rs3774963 C>G多态性与溃疡性结肠炎的发病具有相关性,其中G等位基因可能是溃疡性结肠炎的遗传危险因素.
基于DSP和IPM的级联五电平变频调速系统的研究

级联多电平技术解决了大功率开关设备的开关频率和开关容量存在的矛盾,是目前电力电子领域研究的热点.本文根据变频调速系统的基本原理,利用数字信号处理器和智能功率模块,给出了变频调速系统的硬件实现,并阐述了利用数字信号处理器产生控制脉冲的方法和系统的控制程序的设计.本文通过计算机仿真分析了基于载波移相SPWM技术的级联五电平变频器的输出电压波形和频谱分析.采用先进的TMS320F2812数字信号处理器作为控制中心,设计了级联五电平变频器的控制软件,并利用DSP实验箱进行了实验.实验结果表明,级联五电平变频调速系统的输出正弦波逼近程度高、性能稳定,与仿真验证基本吻合,可以广泛应用于电气传动系统中.
基于改进遗传算法的高压直流输电系统逆变器定电压自抗扰控制器的设计

换流站中整流器和逆变器具有良好的控制性能是HVDC系统安全稳定运行的保证.自抗扰控制器(ADRC)对系统时变和不确定性干扰具有良好适应能力,但参数不易整定.本文将一种综合考虑控制器动态性能和被控对象输入受限的改进遗传算法应用到ADRC的参数整定中.将其应用到直流输电系统的逆变器控制器的设计中,仿真结果表明所设计的逆变器定电压自抗扰控制器具有良好的控制性能,对系统的外扰和模型参数的摄动具有良好的适应性.
铝电解电容器套管检测自动化生产线控制系统设计

铝电解电容器生产过程中,装配套管工序有时会出现漏套,为了分拣出此类产品,在装配工序设计了一条检测套管自动化生产线,将没有套上套管的电容器剔除掉.该生产线采用检测、信息处理、自动控制等关键技术.它以可编程控制器(PLC)为核心进行控制系统的设计,运用了较为普遍的光电传感器,磁感应传感器和用来辨别颜色的光纤传感器.此设计还运用了变频器技术控制电机转速,利用触摸屏对整个系统进行监控.大大节约了劳动力,保证了产品的质量,提高了经济效益.
钢坯轧制过程中初轧机过钢电流的一种检测方法

在初轧机的电流监测中,为了有效克服因轧制负荷、转矩系数、参数摄动等扰动造成的过钢电流特征数据离散的问题,采取自相关分析的方法,设计以单片机为核心的检测电路,提取过钢过程周期性信号,实现了对初轧机轧制过程中过钢电流的检测,达到了过钢电流在线监测的目的.
曲轴滚压强化圆角变形的有限元分析与仿真

建立了曲轴滚压强化圆角变形的有限元模型,利用ANSYS有限元分析软件,获得了曲轴滚压每一步加载过程中圆角处应力、应变分布,残余变形量等情况,为优化曲轴滚压强化工艺提供理论基础.
多发节段性结肠结核误诊克罗恩病

病例1 患者男,20岁,3个月前出现中下腹痛、腹胀、腹泻、黄色稀便、偶带黏液、无脓血,近1个月来症状加重,并伴有午后低热,乏力,体重下降.
4例胃肝样腺癌患者临床病理及免疫组化特点

肝样腺癌是指组织结构类似于肝癌的肝外肿瘤,可发生于多种脏器,最常见于胃.本研究回顾性分析了胃肝样腺癌的临床病理及免疫组化的特点.
宫腔镜诊断宫颈管腺癌4例临床分析

4例宫颈管腺癌患者经常规宫颈癌三阶梯诊断步骤未能发现病变,均通过宫腔镜及镜下取组织进行病理检查而确诊.宫腔镜在诊断宫颈管腺癌中有一定临床应用价值.
较低高度坠落伤致胸主动脉破裂死亡2例

1 案例资料案例1 李某,男,28岁.某日自墙头跳落土质地面后死亡,墙头距地面高度3.75m.衣着检验:左裤腿中段后外侧有2.5cm呈"L"形的破口.尸表检验:左腰部、左膝关节前及右大腿外侧可见多处皮擦伤.解剖检验:颅骨未触及骨折;肋骨及肋软骨未见骨折;左侧胸腔内有大量血性液体和血凝块,约1 600mL,主动脉弓与降主动脉交界部可见横行长约5cm、纵行长1.1cm、0.5cm的二处裂口,横行与纵行垂直相交.左肺门部血肿与主动脉周围出血相连;心包壁层出血、增厚;胸椎前两侧至颈椎前左侧软组织出血;腹腔内无积液,胃大弯右侧大网膜可见6cm×3.5cm、4cm×3cm二处出血;双肾表面软组织出血;脊柱及四肢未触及骨折.
非攻击性咬伤牙齿舌面特征识别1例

非攻击性咬伤多与性爱有关,常分布于乳房、会阴、大腿内侧、面部等~([1]).非攻击性咬伤牙颌的咬合力小,损伤轻微,所反映出的牙齿特征信息也少.但除咬合力外,多伴有吮吸所致的皮内出血[2]),是单纯咬合不易出现的特征.本文通过对1例案例的分析,探讨这一特征在非攻击性咬伤个体识别中的应用价值.
武汉农村饮用地下水砷、氟化物、硝酸盐含量及其健康风险评价

<生活饮用水卫生标准>(1385749-2006)中规定了分散式供水水质的17项常规指标的限值,其中毒理学指标有3项,即砷、氟化物、硝酸盐.长期饮食含砷超标的水,微量砷可在体内长期蓄积,造成对机体的长期慢性损害.
Effect of H_2S on the transformation of 1-hexene over NiMoS/γ-Al_2O_3 with hydrogen

The effect of H_2S contents on the transformation of 1-hexene with hydrogen over NiMoS/γ-Al_2O_3 catalyst was investigated. Inhibition of H_2S on both hydrogenation and isomerization reactions of olefin has been demonstrated. And the promotion effect of H_2S on the formation of C_6 thiols and C_(12) thioethers has also been observed. It was found out that there was only one type of active site on the NiMoS/γ-Al_2O_3 for reactions which include hydrogenation reaction, isomerization reaction and sulfides formation reaction, and the formation reactions of sulfides were superior to both hydrogenation and isomerization reactions. The reaction network for the conversion of 1-hexene in the presence of H_2S was proposed.
Oxidative dehydrogenation of propane under steady-state and transient regimes over alumina-supported catalysts prepared from mixed V_2W_4O_(19)~(4-) hexametalate precursors

An integrated approach combining the development of an innovative catalyst and the research of a set of adequate operating conditions for the propane oxidative dehydrogenation (ODH) is described. The experimental set-up, specially designed for steady-state and transient studies is presented. The preparation method, the characterization and the performances in steady-state and transient regimes of catalysts based on V_2W_4O_(19)~(4-) Lindqvist isopolyanion used as a precursor and supported on alumina are reported. The influence of the preparation method of the catalyst and the role of water in the feed gas are more particularly discussed.