[Objective] The aim was to find an efficient method to measure available nitrogen, phosphorus and potassium content in vegetable seedling substrate. [ Method] The suitable dosage of leaching agent, ratio of the substr...[Objective] The aim was to find an efficient method to measure available nitrogen, phosphorus and potassium content in vegetable seedling substrate. [ Method] The suitable dosage of leaching agent, ratio of the substrate to water and leaching time for the detection of nutrient contents in the substrate by a soil nutrient measuring instrument were discussed firstly, and then the results of nutrient contents measured by the soil nutrient measuring instrument were compared with that by conventional approaches. [ Result] In compadson with the conventional methods, the av- erage content of available nitrogen measured by the soil nutrient measuring instrument was slightly higher, while the average content of available phosphorus measured by the instrument was lower; the average content of available potassium measured by the instrument was close to that by the conventional method. [ Conclusion] This study could provide us a new method to detect available nitrogen, phosphorus and potassium content in seedling substrate efficiently.展开更多
目的:回顾性分析外侧象限乳腺癌患者乳腺原发肿瘤及腋窝淋巴结的超声特征,并构建列线图模型,为临床评估外侧象限乳腺癌患者腋窝淋巴结转移提供影像学依据。方法:回顾性分析无锡市锡山人民医院经病理证实的127例外侧象限乳腺癌患者腋窝...目的:回顾性分析外侧象限乳腺癌患者乳腺原发肿瘤及腋窝淋巴结的超声特征,并构建列线图模型,为临床评估外侧象限乳腺癌患者腋窝淋巴结转移提供影像学依据。方法:回顾性分析无锡市锡山人民医院经病理证实的127例外侧象限乳腺癌患者腋窝淋巴结及乳腺原发肿瘤的超声影像学特征。伴腋窝淋巴结转移者分入阳性组(54例),不伴腋窝淋巴结转移者分入阴性组(73例)。采用单变量和多变量Logistic回归分析,筛选淋巴结转移的危险因素。使用R语言将数据集随机分成训练集和验证集,基于训练集构建列线图预测模型,预测腋窝淋巴结转移风险,并在验证集中验证。受试者工作特征(receiver operating characteristic,ROC)曲线用于评估诊断性能,校正曲线和Hosmer-Lemeshow检验用于评估预测值与实际列线图预测值的一致性。结果:肿瘤针状边缘(OR=4.16,95%CI:1.25~13.79)和淋巴门结构不清晰(OR=19.20,95%CI:1.98~186.36)是外侧象限乳腺癌患者发生腋窝淋巴结转移的独立危险因素。据此构建预测外侧象限乳腺癌腋窝淋巴结转移的列线图模型。ROC曲线显示,训练集的曲线下面积(area under curve,AUC)为0.74(0.62~0.86),验证集AUC为0.73(0.62~0.84)。训练集和验证集的Hosmer-Lemeshow检验分别为P=0.570和P=0.552。结论:超声有助于术前外侧象限乳腺癌患者腋窝淋巴结转移情况的评估;基于Logistic回归构建的列线图预测模型具有良好的安全性、可靠性和实用性。展开更多
目的:探讨罗沙司他治疗肾脏透析患者贫血的疗效和安全性。方法:检索PubMed、Embase、Web of Science、Cochrane Library、Scopus、万方、CNKI、维普、CBM数据库,时间为建库至2020年6月。纳入罗沙司他治疗贫血的随机对照试验,提取资料并...目的:探讨罗沙司他治疗肾脏透析患者贫血的疗效和安全性。方法:检索PubMed、Embase、Web of Science、Cochrane Library、Scopus、万方、CNKI、维普、CBM数据库,时间为建库至2020年6月。纳入罗沙司他治疗贫血的随机对照试验,提取资料并应用RevMan 5.3软件进行Meta分析。结果:纳入4项研究共847例患者。分析结果显示,与对照组相比,罗沙司他可有效提高患者血红蛋白达标率(RR=1.24,95%CI 1.01~1.53,P=0.04),但对血红蛋白水平的增加,两组无统计学差异(WMD=0.03 g·dL-1,95%CI-0.09~0.16,P=0.61)。此外,罗沙司他显著提高转铁蛋白饱和度。在治疗患者贫血的过程中,罗沙司他组的不良事件发生率高于对照组。结论:罗沙司他可有效提高患者血红蛋白达标率,增加铁利用,改善患者的肾性贫血症状,但其安全性问题仍需广泛关注。展开更多
目的探讨主动监测培养与模拟训练防控干预对高风险患者多重耐药菌(multidrug-resistant organisms,MDRO)感染防控效果,为降低MDRO医院感染和制定科学有效的MDRO预防和控制策略提供依据。方法选择2017年2-12月入住重症监护病房(intensive...目的探讨主动监测培养与模拟训练防控干预对高风险患者多重耐药菌(multidrug-resistant organisms,MDRO)感染防控效果,为降低MDRO医院感染和制定科学有效的MDRO预防和控制策略提供依据。方法选择2017年2-12月入住重症监护病房(intensive care unit,ICU)的患者222例为试验组,在模拟防控训练的基础上联合多重耐药目标菌主动监测培养;另选择2016年2-12月未实施强制干预措施的患者210例为对照组。比较2组MDRO构成比、MDRO感染率、MDRO定植率及接触隔离依从性。结果2组医院感染率、MDRO医院感染率差异均无统计学意义(P>0.05)。试验组医务人员实施的MDRO隔离措施中,隔离医嘱、床旁隔离、穿隔离衣、贴隔离标识、床旁放置快速手消与科室间告知依从性均高于对照组,差异有统计学意义(P<0.05)。试验组主动筛查产超广谱β-内酰胺酶的大肠埃希菌、产超广谱β-内酰胺酶的肺炎克雷伯菌和多重耐药鲍曼不动杆菌,定植率分别为10.10%、5.72%和16.83%。2组抗菌药物使用率均>90%,抗菌药物使用前送检率均<30%。结论ICU多重耐药鲍曼不动杆菌定植情况较严重,定植者较易获得医院内感染,实施主动监测培养与模拟防控训练干预可有效预防和控制多重耐药菌在医院内传播。展开更多
基金Supported by the Scientific Research Project of Public Welfare Industry(Agriculture)(201303014-01)Science and Technology Innovation Team of Anhui Academy of Agricultural Sciences(14C0314)the Dean’s Youth Innovation Fund from Anhui Academy of Agricultural Sciences(15B0331)
文摘[Objective] The aim was to find an efficient method to measure available nitrogen, phosphorus and potassium content in vegetable seedling substrate. [ Method] The suitable dosage of leaching agent, ratio of the substrate to water and leaching time for the detection of nutrient contents in the substrate by a soil nutrient measuring instrument were discussed firstly, and then the results of nutrient contents measured by the soil nutrient measuring instrument were compared with that by conventional approaches. [ Result] In compadson with the conventional methods, the av- erage content of available nitrogen measured by the soil nutrient measuring instrument was slightly higher, while the average content of available phosphorus measured by the instrument was lower; the average content of available potassium measured by the instrument was close to that by the conventional method. [ Conclusion] This study could provide us a new method to detect available nitrogen, phosphorus and potassium content in seedling substrate efficiently.
文摘目的:回顾性分析外侧象限乳腺癌患者乳腺原发肿瘤及腋窝淋巴结的超声特征,并构建列线图模型,为临床评估外侧象限乳腺癌患者腋窝淋巴结转移提供影像学依据。方法:回顾性分析无锡市锡山人民医院经病理证实的127例外侧象限乳腺癌患者腋窝淋巴结及乳腺原发肿瘤的超声影像学特征。伴腋窝淋巴结转移者分入阳性组(54例),不伴腋窝淋巴结转移者分入阴性组(73例)。采用单变量和多变量Logistic回归分析,筛选淋巴结转移的危险因素。使用R语言将数据集随机分成训练集和验证集,基于训练集构建列线图预测模型,预测腋窝淋巴结转移风险,并在验证集中验证。受试者工作特征(receiver operating characteristic,ROC)曲线用于评估诊断性能,校正曲线和Hosmer-Lemeshow检验用于评估预测值与实际列线图预测值的一致性。结果:肿瘤针状边缘(OR=4.16,95%CI:1.25~13.79)和淋巴门结构不清晰(OR=19.20,95%CI:1.98~186.36)是外侧象限乳腺癌患者发生腋窝淋巴结转移的独立危险因素。据此构建预测外侧象限乳腺癌腋窝淋巴结转移的列线图模型。ROC曲线显示,训练集的曲线下面积(area under curve,AUC)为0.74(0.62~0.86),验证集AUC为0.73(0.62~0.84)。训练集和验证集的Hosmer-Lemeshow检验分别为P=0.570和P=0.552。结论:超声有助于术前外侧象限乳腺癌患者腋窝淋巴结转移情况的评估;基于Logistic回归构建的列线图预测模型具有良好的安全性、可靠性和实用性。
文摘目的探讨主动监测培养与模拟训练防控干预对高风险患者多重耐药菌(multidrug-resistant organisms,MDRO)感染防控效果,为降低MDRO医院感染和制定科学有效的MDRO预防和控制策略提供依据。方法选择2017年2-12月入住重症监护病房(intensive care unit,ICU)的患者222例为试验组,在模拟防控训练的基础上联合多重耐药目标菌主动监测培养;另选择2016年2-12月未实施强制干预措施的患者210例为对照组。比较2组MDRO构成比、MDRO感染率、MDRO定植率及接触隔离依从性。结果2组医院感染率、MDRO医院感染率差异均无统计学意义(P>0.05)。试验组医务人员实施的MDRO隔离措施中,隔离医嘱、床旁隔离、穿隔离衣、贴隔离标识、床旁放置快速手消与科室间告知依从性均高于对照组,差异有统计学意义(P<0.05)。试验组主动筛查产超广谱β-内酰胺酶的大肠埃希菌、产超广谱β-内酰胺酶的肺炎克雷伯菌和多重耐药鲍曼不动杆菌,定植率分别为10.10%、5.72%和16.83%。2组抗菌药物使用率均>90%,抗菌药物使用前送检率均<30%。结论ICU多重耐药鲍曼不动杆菌定植情况较严重,定植者较易获得医院内感染,实施主动监测培养与模拟防控训练干预可有效预防和控制多重耐药菌在医院内传播。
