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A soil quality index for subtropical sandy soils under different Eucalyptus harvest residue managements

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Journal of Forestry Research 2023年第1期34卷 243-255页

作者： Jackson Freitas Brilhante de Sao José Maurício Roberto Cherubin Luciano Kayser Vargas Bruno Brito Lisboa Josiléia Acordi Zanatta Elias Frank Araújo Cimélio bayer Department of Agricultural Research and Diagnosis Agriculture SecretariatLivestock and Rural Development of Rio Grande do Sul.570Goncalves Dias St.Porto AlegreRio Grande do SulBrazil Department of Soil Science “Luiz de Queiroz”College of Agriculture/University of Sao PauloPadua Dias Ave 11PiracicabaSao PauloBrazil Embrapa Floretas Estrada da Ribeirakm 111ColomboParanáBrazil CMPC Celulose RiograndenseSao Geraldo St.GuaíbaRio Grande do Sul 1680Brazil Department of Soil Science Federal University of Rio Grande do SulPorto AlegreBrazil

Eucalyptus harvest residues are attractive energy production resources for the forestry ***,their removal can have adverse impacts on soil quality and forest productivity,especially in sandy *** this study,we assessed the effects of Eucalyptus harvest residue managements with variable intensity on forest productivity and on physical,chemical,and biological indicators of the soil *** experiment was conducted in a Quartzipsamment(33 g kg-1clay)planted with Eucalyptus saligna in barra do Ribeiro in southern *** the Eucalyptus was planted,residues from the previous rotation were subjected to five different management treatments:(1)FRM,in which all forest residues(bark,branches,leaves,and litter)were allowed to remain on the soil and only trunk wood was removed;(2)FRMB,in which was identical to FRM except that bark was also removed;(3)FRMBr,in which only trunk wood and branches were removed;(4)FRR,which involved removing all types of residues(bark,branches,leaves,and litter);and,(5)FRRs,in which all forest residues from the previous rotation were removed,and leaves and branches from the new plantation were prevented from falling onto the soil surface using a shade *** years after planting,soil samples were collected at four different depths(0-2.5,2.5-5,5-10,and 10-20 cm)to determine 17 soil chemical,physical,and biological *** results were combined into a soil quality index(SQI)using the principal component analysis *** SQI reduced by 30%,in the 0-20 cm layer,due to removal of harvest residues from the previous rotation,and collection of litter before it falls on the *** main drivers of SQI reduction were the principal components associated with soil organic matter and biological ***,the SQI was positively linearly related to tree height at Piameter at breast height at P=*** adverse impact on soil quality and forest productivity in our study indicates that removal

关键词： Forest residues Soil health Soil organic carbon Microbial biomass Soil conservation

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业余无线电短波通信天线

现代通信 2010年第1期 42-47页

作者：吴国光(ba.ia.

CQ 业余无线电活动是多姿多彩的,除了通常的V/UHF波段通信之外,还有更广阔的天地,那就是业余无线电短波通信。V/UHF波段通信由于电波是直线传播的关系,通信距离只限于视距范围,就算有的地方安装了中继台,使通信距离有了很大的扩展,但是。

关键词：天线效率业余无线电天线振子天线系统短波通信工作频率偶极子天线短波天线偶极天线垂直天线

Prognostic evaluation of postoperative adjuvant therapy for operable cervical cancer:10 years'experience of National Cancer Center in China

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Chinese Journal of Cancer Research 2017年第6期29卷 510-520页

作者： Tong Shu Dan Zhao Bin Li Yating Wang Shuanghuan Liu Pingping Li Jing Zuo Ping ba i RongZhang Lingying Wu Department of Gynecologic Oncology National Cancer Center/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China

Objective： The aim of this study was to investigate the prognostic factors and to evaluate the impact of adjuvant therapy on clinical outcome for early-stage cervical cancer. Methods： The clinical-pathological data of all 1,335 patients with the International Federation of Gynecology and Obstetrics （FIGO） Ib-[ia cervical cancer treated with primary radical surgery at the Chinese National Cancer Center between May 2007 and Dec 2013 were retrospectively reviewed. The median follow-up was 70 months. Results： Of all the patients, 61.6% of the cases received adjuvant therapy, with 5-year disease-free survival （DFS） of 92.1% and 5-year overall survival （OS） of 95.0%. In multivariate analysis, differentiation of G3 （P〈0.05）, lymph node metastasis （LNM, P〈0.05） and lymphovascular space invasion （LVSI, P〈0.05） were independent predictors for OS, while LNM （P〈0.05）, deep stroma invasion （DSI, P〈0.05） and LVSI （P〈0.05） were independent factors for DFS. The samples were stratified by histologic type, and cervical squamous cell carcinoma （SCC） was found to share the same independent factors except for differentiation of OS. As to patients with cervical adenocarcinoma/adenosquamons carcinoma （AC/ASC）, differentiation was the independent predictor of OS （P〈0.05）; and LVSI of DFS （P〈0.05）. Of 236 patients with high-risk factors, there was no significant difference in survival between concurrent chemoradiotherapy （CCRT, n=195）, radiotherapy （RT, n=24）, and chemotherapy （CT, n=17）. Among the 190 patients with LNM who underwent CCRT, 124 cases showed improved DFS after sequential CT （P=0.118）, with a recurrence rate decrease of 14%, though the difference was not statistically significant. Patients with single intermediate-risk factors like DSI or LVSI were found to partially benefit from adjuvant therapy, but the difference was not statistically significant. Conclusions： LNM, LVSI, DSI and differentiation were found to be independent prognostic factors for operable cervical cancer. Ag

关键词： Cervical neoplasm adjuvant therapy prognostic factors DFS OS

用于砂浆保护层腐蚀风险评估的宏电池电流监测

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功能材料 2010年第A2期41卷 235-238,242页

作者：卢爽巴恒静哈尔滨工业大学土木工程学院黑龙江哈尔滨150060

开发了一种可埋置在砂浆内部的宏电池电流传感器。对传感器的阴极与阳极电位,电极间的砂浆电阻以及宏电池电流进行了监测。并针对阳极的不同腐蚀状态,对宏电池电流发生的电化学本质进行了探讨。结果表明,宏电池电流的大小与砂浆电阻、... 详细信息

开发了一种可埋置在砂浆内部的宏电池电流传感器。对传感器的阴极与阳极电位,电极间的砂浆电阻以及宏电池电流进行了监测。并针对阳极的不同腐蚀状态,对宏电池电流发生的电化学本质进行了探讨。结果表明,宏电池电流的大小与砂浆电阻、阴极与阳极电位以及阴极阳极的极化电阻之间有直接关系。在阳极处于钝化状态时,宏电池电流几乎可以忽略,这取决于微弱的腐蚀驱动力、较高的电极极化电阻和砂浆电阻。而阳极处于活化状态时,宏电池电流显著增大,此时的腐蚀驱动力较大,而砂浆电阻较小。此外,在活化状态下通过对宏电池电流电化学本质的分析确定了阳极的ln(ia·Ic)的值,对砂浆保护层的服役状态和钢筋的腐蚀情况进行了评估。试验结果显示,开发的宏电池电流传感器为钢筋混凝土结构的腐蚀状态进行长期的预警和系统的评价提供新的途径。

关键词：宏电池传感器电阻腐蚀砂浆

甘宁青新四省区10年急性心肌梗死患者血管紧张素转化酶抑制剂和血管紧张素受体阻滞剂的应用及影响因素

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中华急诊医学杂志 2017年第9期26卷 1065-1070页

作者：陈平柯霞巴音巴特巴登其其克艾迪娜·库然斯赵宝河新疆博尔塔拉蒙古自治州新疆博尔塔拉蒙古自治州人民医院心血管内科 833400

目的了解甘宁青新四省区急性心肌梗死（AMI）患者中血管紧张素转化酶抑制剂和血管紧张素受体阻滞剂（ACEI／ARB）的使用情况，并探讨其影响因素。方法研究数据来源于一项覆盖全国31个省的冠心病医疗结果评价研究——China PEACE回顾性AM... 详细信息

目的了解甘宁青新四省区急性心肌梗死（AMI）患者中血管紧张素转化酶抑制剂和血管紧张素受体阻滞剂（ACEI／ARB）的使用情况，并探讨其影响因素。方法研究数据来源于一项覆盖全国31个省的冠心病医疗结果评价研究——China PEACE回顾性AMI研究，本研究使用甘宁青新四省区8家协作医院（其中三级医院2家、二级医院6家）数据进行分析。通过调查甘宁青新四省区8家协作医院2001、2006、2011三个特定年份的研究病历，分析ACEI／ARB的使用情况，并采用二元logistic回归方法探讨其使用的影响因素。结果共人选311例患者，其中中国指南I类推荐组300例，指南Ⅱa类推荐组11例。指南Ⅰ类推荐患者2001年、2006年和2011年ACEI／ARB使用率分别为69．57％，82．19％和60．77％（P=0．033），指南1ia类推荐患者的ACEI／ARB使用率分别为40％，0％和60％（P=0．525）。不同年份ACEI／ARB使用率在I类推荐患者中差异有统计学意义，而在Iia类推荐患者中差异无统计学意义。在3个研究年份中，ACEIs使用率均显著高于ARBs。多因素分析显示吸烟、卒中、高血压、心力衰竭和收缩压水平是影响ACEI／ARB使用的独立相关因素，即吸烟（OR=2．0，95％CI：1．2～3．6）、合并高血压（OR=2．3，95％CI：1．3～4．1）、心力衰竭（OR=3．1，95％CI：1．7～5．8）的患者更容易接受ACEI／ARB类药物，而有卒中史（OR=0．3，95％CI：0．1～0．8）、入院时收缩压〈90mmHg（1mmHg=0．133kPa）（OR=0．1，95％CI：0～0．5）的患者使用ACEI／ARB类药物比例较低。结论甘宁青新欠发达地区，急性心肌梗死患者住院期间规范服用ACEI／ARB总体比例仍较低，ACEI／ARB使用率并未随着医疗条件的进步、经济的发展、信息的普及而增高，尤其是合并卒中史、低血压患者，而合并高血压、心力衰竭、吸烟者更易接受ACEI／ARB类药物，主要原因考虑医生对冠心病规范用药指南理解不透彻、对药物不良反应顾忌，也与患者对疾病认知程度低，重视不足有关。

关键词：急性心肌梗死血管紧张素转化酶抑制剂血管紧张素受体阻滞剂医疗质量

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随机采样子空间保局投影人脸识别算法

光学精密工程 2008年第8期16卷 1465-1470页

作者：杨利平龚卫国李伟红辜小花重庆大学光电技术及系统教育部重点实验室重庆400030

针对单一保局投影(LPP)算法分类识别能力弱的问题,提出了一种随机采样子空间保局投影算法(RSSLPP)。该算法在对训练样本的主元子空间进行随机采样的基础上,利用保局投影得到了多个既有差异且又互补的保局投影子空间,测试样本被分别投影... 详细信息

针对单一保局投影(LPP)算法分类识别能力弱的问题,提出了一种随机采样子空间保局投影算法(RSSLPP)。该算法在对训练样本的主元子空间进行随机采样的基础上,利用保局投影得到了多个既有差异且又互补的保局投影子空间,测试样本被分别投影到这些保局投影子空间上,然后利用最近邻分类器进行分类识别。最后,根据多数投票原则融合多个子空间上的分类结果来确定样本所属类别。在FERET人脸图像子库上的实验表明:随机采样子空间保局投影算法的性能明显优于Eigenface、Fisherface、保局投影和鉴别保局投影等算法;和保局投影算法相比,本文所提出的方法人脸识别精度提高了10%以上。结果表明,随机采样子空间保局投影算法有效地融合了各LPP投影空间的互补信息,可以显著地提高人脸识别精度。

关键词：随机采样子空间保局投影保局投影子空间人脸识别

临沂市售熟肉制品亚硝酸盐残留及微生物污染状况的调查

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中国调味品 2017年第12期42卷 162-165页

作者：李玲李具鹏巴瑞祥临沂大学生命科学学院山东临沂276000

为了解临沂市市售熟肉制品中亚硝酸盐残留量、脂类氧化和微生物污染状况,随机采集临沂大学附近超市、农贸市场、学校食堂等地熟肉制品,进行调查研究。结果表明:肉灌肠亚硝酸盐含量在2.2~9.1mg/kg,酱卤肉亚硝酸盐含量在2.4~86.2mg/kg,烧... 详细信息

为了解临沂市市售熟肉制品中亚硝酸盐残留量、脂类氧化和微生物污染状况,随机采集临沂大学附近超市、农贸市场、学校食堂等地熟肉制品,进行调查研究。结果表明:肉灌肠亚硝酸盐含量在2.2~9.1mg/kg,酱卤肉亚硝酸盐含量在2.4~86.2mg/kg,烧烤肉亚硝酸盐含量在1.9~43mg/kg。对过氧化值的分析表明:过氧化值的检出率为83.3%,含量在0.08~7.23g/100g。30份熟肉制品微生物合格率为63.3%,其中细菌总数与大肠菌群的合格率分别为73.3%,63.3%,不同场所的熟肉制品合格率不同,超市>餐饮店>农贸市场。定型包装与散装产品的合格率分别为89.47%,18.18%。

关键词：熟肉制品亚硝酸盐过氧化值微生物大肠杆菌

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经颅多普勒超声在脑血栓溶栓中的作用

中国现代医药杂志 2011年第12期13卷 37-39页

作者：巴图杜鹏斯琴新疆伊犁尼勒克县人民医院 835700 新疆医科大学第二附属医院

目的观察经颅多普勒超声监测在动、静脉溶栓治疗急性脑梗死中的指导作用。方法回顾性分析200例急性脑梗死患者动、静脉溶栓治疗的资料,200例均为大脑中动脉主干及分支栓塞,其中100例未用经颅多普勒超声监测(对照组),2008年后100例溶栓... 详细信息

目的观察经颅多普勒超声监测在动、静脉溶栓治疗急性脑梗死中的指导作用。方法回顾性分析200例急性脑梗死患者动、静脉溶栓治疗的资料,200例均为大脑中动脉主干及分支栓塞,其中100例未用经颅多普勒超声监测(对照组),2008年后100例溶栓患者治疗前、后用经颅多普勒超声监测(监测组)。治疗前后收集相关数据,并做统计学分析。结果监测组大脑中动脉、大脑前动脉Vs、Vm均明显高于溶栓前,而RI、PI低于溶栓前(P0.05);术后24h、术后2wESS评分差别有统计学意义(P<0.05);术后脑出血、继发脑血管栓塞、脑血管痉挛、心律失常、心跳骤停并发症差别有统计学意义(P<0.05)。结论经颅多普勒超声可以为脑血栓溶栓治疗提供指导。

关键词：经颅多普勒超声溶栓治疗急性脑梗死

Contribution of MRI in Extension Assessment of Cervical Cancer in Yaoundé(Cameroon)

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Open Journal of Radiology 2021年第4期11卷 151-159页

作者： Mbozo’o Mvondo Samuel Yannick Onana Aminou Mohamadou Jérémie Mbo Amvene David Ngaroua Genesis Eric Secvou Mathurin Neossi Guena Obi Fidelis Ayuk Ekobena Fouda Odile Fernade Zeh Boniface Moifo Hamadou ba Samuel Nko’o Amvene Departement of Radiology and Medical Imaging Faculty of Medicine and Biomedical Sciences of Garoua University of Ngaoundéré Ngaoundéré Cameroon Department of Biomedical Sciences Faculty of Sciences University of Ngaoundéré Ngaoundéré Cameroon Department of Radiology Yaoundé Military Hospital Yaoundé Cameroon Faculty of Medicine and Biomedical Sciences University of Yaoundé Cameroon

background: Cervical cancer is one of the most common cancers, requiring a precise complementary assessment. The aim of this study was to contribute to the improvement of the management of cervical cancer by describing the MRI aspects of cervical cancer according to the IFOG-MRI classification. Material and Methods: This was a cross-sectional study, conducted in patients who came for clinical suspicion, extension assessment of histologically confirmed cervical cancer, from October 2020 to March 2021, in Yaoundé (Cameroon). Results: 54 patients were selected, with an average age of 50.4 years. Genital hemorrhage was the most frequent symptom (92%). The mean tumor size was 52.9 mm. According to IFOG staging, stages ia, Ib, Iia, IIb, IIia, IIIb, and IV accounted for 9.10%, 10.20%, 12.50%, 29.50%, 5.70%, 12.50%, and 20% respectively. No patient had known metastasis at the time of examination. Conclusion: MRI allows non-invasive, satisfactory tumor staging examination by providing information on tumor size, parametrium invasion, adjacent organ involvement, and the presence of lymph node metastasis.

关键词： Cervical Cancer Magnetic Resonance Imaging International Federation of Obstetricians and Gynecologists