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Research on grade Renewing of Cultivated Land at County Level:A Case Study of Daxing District,Beijing

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Asian Agricultural Research 2012年第12期4卷 55-60,65页

作者： MA Jian-hui JIN Jing WU Ke-ning KOU Zong-miao FU Bo School of Land Science and Technology China University of Geosciences Key Lab of Land Consolidation MLR Department of Cultivated Land Conservation Beijing Municipal Bureau of Land and Resources School of Land Science and Technology China University of Geosciences Key Lab of Land Consolidation MLR Key Lab of Evaluation and Monitoring of Agricultural Land Quality MLR Beijing Land Resources Surveying and Planning Center

To create a scientific way to renew the grades of cultivated land at county level, monitoring points were set up according to the monitoring control regions and grade types of cultivated land in Daxing District, Beijing, and soil samples were collected to carry out chemical analysis. Afterwards, the input and output data of cultivated land in each village were surveyed to renew the grades of cultivated land. The results indicate that the average natural grade of cultivated land was 8.4, which was equal to that of 2004; the average utilization grade was 8.1, which was slightly higher than that of 2004; the average economic grade was 9.9, which was lower than that of 2004. It is concluded that it is scientific to renew cultivated land grades through scientifically setting monitoring points according to the monitoring control regions and grade types of cultivated land.

关键词： Land management grade renewing of cultivated land

Analysis and Forecast of China’s Grain Supply and Demand Quality grade Structural Balance

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American Journal of Plant Sciences 2018年第8期9卷 1747-1758页

作者： Bingjun Li Weiming Yang Mengfei Wu College of Information and Management Science Henan Agricultural University Zhengzhou China

Based on the analysis of China’s grain production and demand quality grade, this paper uses the non-equidistance GM (1,1) model and the inference algorithm to predict the structural balance of the supply and demand grades of China’s four major grain crops. The results show that the supply and demand for wheat, corn and rice can maintain a quantitative balance. While, it’s difficult to achieve a quality grade balance in wheat and rice and keep a supply and demand balance in terms of quantity and quality of soybean. Simultaneously, the supply of premium grade corn is greater than the demand. The analysis and prediction results can reflect the existing structural balance matter of grain supply and demand at different quality grades in China, and provide theoretical basis for governments to formulate relevant policies.

关键词： Quality grade Supply-Demand Structure Non-Equidistance GM (1 1) Model

Low Dose Total Body Irradiation for Relapsed Low grade Non-Hodgkin’s Lymphoma: Experience of National Cancer Institute, Cairo

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Journal of Cancer Therapy 2015年第1期6卷 25-33页

作者： Yasser Bayoumi Aida Radwan Radiation Oncology Department National Cancer Institute Cairo University Cairo Egypt Medical Physics Department National Cancer Institute Cairo University Cairo Egypt

Background and Purpose: The relapsed low grade non-Hodgkin’s lymphoma (LG-NHL) is currently?incurable disease and the optimal treatment regimen has not determined yet. Low dose total body irradiation (LTBI) provides an alternative mechanism of action against cancer cells rather than direct cell kill. The mode of action of LTBI is immune-modulatory effect, induction of apoptosis and?hypersensitivity to low radiation doses. The aim of our study is to evaluate the effect of LTBI on relapsed?LG-NHL and reporting our experience at National Cancer Institute, Cairo (NCI, Cairo). Material and Methods: Fifty eight patients with relapsed LG-NHL and received LTBI studied retrospectively.?LTBI dose was 1.6 Gy/8 fractions divided on 2 courses;each course 4 fractions treated over 4 days with 2 weeks rest between the 2 courses. Results: The median age is 54 years;65% of the patients are men. Forty (69%) patients had performance status of 2 or more. Twenty seven patients were stage II/III and 31 patients (53%) had stage IV disease. Twenty six (45%) patients had bulky disease more than 10 cm and 22 (38%) patients had B symptoms at the time of relapse. The?extranodal disease was present in 17 patients (29%) and 78% of the patients received?>3 regimens of chemotherapy before referral to LTBI. Twenty three patients received IFRT (mean dose 32 ± 4 Gy) to initially bulky sites after LTBI. Fourteen patients (24%) achieved complete remission (CR) while 45%, 21% and 10% had partial remission (PR), stable disease (SD) and progressive disease (PD) respectively. The median PFS duration was 14 months and the median OS duration?was 39 months. Stage VI,?>3 regimen of chemotherapy and bad response to LTBI (SD) affected?progression duration adversely (0.03, 0.05 and 0.01 respectively). The response to LTBI is the only factor affected the OS duration significantly. The 3-year PFS was 19% ± 9%, and 3-year OS was 45% ± 8%. Stage IV was the only factor affected the 3-year PFS significantly with p value

关键词： Low grade Non Hodgkin’s Lymphoma [LG-NHL] Low Dose Total Body Irradiation [LTBI]

Geochemical and Geostatistical Studies for Estimating Gold grade in Tarq Prospect Area by K-Means Clustering Method

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Open Journal of Geology 2019年第6期9卷 306-326页

作者： Adel Shirazy Aref Shirazi Mohammad Hossein Ferdossi Mansour Ziaii Shahrood University of Technology Shahrood Iran Young Researchers & Elite Club Shahrood Branch Islamic Azad University Shahrood Iran Amirkabir University of Technology (Tehran Polytechnic) Tehran Iran Islamic Azad University Tehran Iran

Tarq geochemical 1:100,000 Sheet is located in Isfahan province which is investigated by Iran’s Geological and Explorations Organization using stream sediment analyzes. This area has stratigraphy of Precambrian to Quaternary rocks and is located in the Central Iran zone. According to the presence of signs of gold mineralization in this area, it is necessary to identify important mineral areas in this area. Therefore, finding information is necessary about the relationship and monitoring the elements of gold, arsenic, and antimony relative to each other in this area to determine the extent of geochemical halos and to estimate the grade. Therefore, a well-known and useful K-means method is used for monitoring the elements in the present study, this is a clustering method based on minimizing the total Euclidean distances of each sample from the center of the classes which are assigned to them. In this research, the clustering quality function and the utility rate of the sample have been used in the desired cluster (S(i)) to determine the optimum number of clusters. Finally, with regard to the cluster centers and the results, the equations were used to predict the amount of the gold element based on four parameters of arsenic and antimony grade, length and width of sampling points.

关键词： Gold Tarq K-Means Clustering Method Estimation of the Elements grade K-Means

Admission Motor Strength grade Predicts Mortality in Patients with Acute Ischemic Stroke Undergoing Mechanical Thrombectomy

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Neuroscience & Medicine 2013年第1期4卷 1-6页

作者： Vishnumurthy Shushrutha Hedna Aakash N. Bodhit Saeed Ansari Adam D Falchook Latha G. Stead Sharathchandra Bidari Brian L Hoh Kenneth M Heilman Michael F Waters Department of Emergency Medicine University of Florida Gainesville USA Department of Neurology University of Florida Gainesville USA Department of Neuroradiology University of Florida Gainesville USA Department of Neurosciences University of Florida Gainesville USA. Department of Neurosurgery University of Florida Gainesville USA

Background: The mortality due to mechanical thrombectomy (MT) in the acute treatment of intracranial arterial occlu- sions can be up to 45%. The SWIFT (Solitaire FR with the Intention for Thrombectomy) and Multi MERCI (mechani- cal embolus removal in cerebral ischemia) trials have evaluated the safety and efficacy of MT. It may be important to determine pre-procedural factors that help predict post-intervention prognosis. We sought to determine if admission medical research council (MRC) motor strength grade along with other factors can be used as predictor of mortality after MT for acute ischemic stroke. Methods: Retrospective analysis of stroke database assessing outcomes in all 62 patients who underwent MT as an intervention for acute ischemic stroke, with or without concurrent intravenous thrombolysis was done. Five baseline variables were included in univariate and multivariate analyses to define the in- dependent predictors of mortality during current hospitalization. The medical research council (MRC) motor grade (0 - 5);modified collateral flow (CS) grading (0 - 3);age;acute and chronic co-morbidities were used as the baseline vari- ables. If motor strength grade were different in upper and lower extremities, then the lower grade was used. Age was analyzed independently as well as dichotomized using 80 as cut-off value. Relevant stroke related acute and chronic co-morbidities were given 1 point each and mean calculated. Results: In the univariate analysis, low (0 - 1) motor strength grade (OR, 0.11;95% CI, 0.021 - 0.33;p = 0.001) and age (OR, 1.06;95% CI, 1.02 - 1.12;p = 0.011) was sig- nificantly associated with mortality. The presence of collateral flow, acute and chronic co-morbidities were not signifi- cantly associated with mortality. In the multivariate analysis, motor grade retained its statistical significance for morta- lity (OR, 0.09;95% CI, 0.01 - 0.32;p = 0.003) along with chronic co-morbidity (OR, 1.52;95% CI 1.05 - 2.43;

关键词： Motor grade Collaterals Ischemic Stroke Endovascular Intervention Outcome after Stroke Mortality after Stroke Acute Stroke Endovascular Treatment Mechanical Thrombectomy

Study of Cofactors Associated with Precancerous High-grade Cervical Lesions at the Teaching Hospital Gabriel Touré, 2010 to 2015

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Surgical Science 2019年第9期10卷 328-337页

作者： Fané Seydou Bocoum Amadou Sissoko Abdoulaye Traoré Soumana Oumar Sanogo Siaka Amara Mamadou Sima Kouma Aminata Traoré Alassane Tegueté Ibrahima Traoré Youssouf Mounkoro Niani Teaching Hospital Gabriel Toure Bamako Mali

Introduction: High grade dysplasia of the cervix has a high incidence and can progress to cervical cancer. The aim was to study cofactors associated with high-grade cervical dysplasia. Methodology: This was a retrospective case-control study without matching. Women with high grade dysplasia were the cases while those with a normal screening test represented the controls. The study took place at the Gabriel Touré University Hospital Center in Bamako. We included 351 cases and 420 controls. The capture and analysis were performed using the SPSS 20 software. A univariate and multivariate logistic regression analysis was performed for the analysis of risk cofactors. The statistical tests used were the odds ratio and its confidence interval and the statistical significance threshold was set at p Results: In univariate analysis, the co-factors statistically significantly associated with the occurrence of high-grade dysplasia were parity 0.6 (0.5 - 0.9), gestational 0.7 (0.5 - 0.9), smoking of the spouse 3.4 (1.1 - 11.3), the non-schooling 1.4 (1.2 - 2.1). In multivariate analysis after adjusting for confounding factors, two co-factors have significantly increased the risk of high-grade dysplasia: lack of schooling 1.4 (1.2 - 2.0) and polygamy 1.5 (1.4 - 2.5). Conclusion: At the end of this study, polygamy and lack of schooling were the main risk factors. The prevention of cervical cancer will go through the education of girls and women as well as communication for behavioral change and social change.

关键词： High grade Dysplasia Cofactor Cervical Cancer Teaching Hospital Gabriel Touré

Magnetic Resonance Perfusion Imaging in the Diagnosis of High-grade Glioma Progression and Treatment-Related Changes: A Systematic Review

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Open Journal of Modern Neurosurgery 2018年第3期8卷 282-305页

作者： John Dongas Adon Toru Asahina Stephen Bacchi Sandy Patel University of Adelaide Adelaide Australia Queen Elizabeth Hospital Woodville Australia Department of Medical Imaging Royal Adelaide Hospital Adelaide Australia

In patients with high grade gliomas (HGGs), progression after treatment can be difficult to diagnose due to treatment-related effects, which overlap in appearance with tumour progression on conventional magnetic resonance imaging (MRI) sequences. Specialised imaging methods have been studied for this purpose, though most institutions currently use histopathology or clinicoradiological follow-up for diagnosis. This publication aims to review the evidence for perfusion MRI techniques. The databases of Pubmed, MEDLINE, EMBASE and Scopus were searched using combinations of the subject headings high grade glioma and MRI perfusion. 41 articles fulfilled the inclusion criteria. Dynamic Susceptibility Contrast (DSC) MRI was the most extensively studied, with several studies achieving high sensitivities and specificities. Other techniques exhibiting potential include Dynamic Contrast Enhanced (DCE) MRI, Arterial Spin Labelling (ASL). However, these techniques are not widely used or available for clinical practice. Composite measures combining results from multiple techniques tended to achieve higher accuracies. Some publications compared processing software used or looked at machine learning with relative success. An issue common to the literature is the lack of standardisation in the reference standard and acquisition/processing methods. Furthermore, many had small sample sizes, and further consideration needs to be given with regards to timing of imaging, and treatment regimens received in such studies.

关键词： Magnetic Resonance Imaging Perfusion High grade Glioma Progression Pseudo Progression

Modeling Crash Risk at Rail-Highway grade Crossings by Track Class

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Journal of Transportation Technologies 2019年第3期9卷 261-275页

作者： Soumya Sharma Srinivas S. Pulugurtha Department of Civil & Environmental Engineering The University of North Carolina at Charlotte Charlotte NC USA

The Federal Railroad Administration (FRA)’s Web Based Accident Prediction System (WBAPS) is used by federal, state and local agencies to get a preliminary idea on safety at a rail-highway grade crossing. It is an interactive and user-friendly tool used to make funding decisions. WBAPS is almost three decades old and involves a three-step approach making it difficult to interpret the contribution of the variables included in the model. It also does not directly account for regional/local developments and technological advancements pertaining to signals and signs implemented at rail-highway grade crossings. Further, characteristics of a rail-highway grade crossing vary by track class which is not explicitly considered by WBAPS. This research, therefore, examines and develops a method and models to estimate crashes at rail-highway grade crossings by track class using regional/local level data. The method and models developed for each track class as well as considering all track classes together are based on data for the state of North Carolina. Linear, as well as count models based on Poisson and Negative Binomial (NB) distributions, was tested for applicability. Negative binomial models were found to be the best fit for the data used in this research. Models for each track class have better goodness of fit statistics compared to the model considering data for all track classes together. This is primarily because traffic, design, and operational characteristics at rail-highway grade crossings are different for each track class. The findings from statistical models in this research are supported by model validation.

关键词： Rail-Highway grade Crossing Crash Risk Modeling Track Class

Lobar Distribution of Low grade Oligodendroglioma: Distribution, Molecular Characteristics, and Survival Based upon Location

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Journal of Cancer Therapy 2014年第13期5卷 1249-1258页

作者： Donald A. Ross Shao Tao Sakir Gultekin Amy M. Ross Portland Veterans Medical Center Oregon Health & Science University Portland Oregon USA

grade II oligodendrogliomas are rare and slow growing tumors, making long-term follow up difficult, but necessary for better understanding. In this retrospective study a review of all grade II oligodendrogliomas encountered in the last 20 years at one institution, was undertaken to determine if specific tumor location and immunohistochemical analysis had any impact on recurrence rate, progression free survival, or life expectancy. Eighty-nine grade II oligodendroglioms cases were reviewed (38 females and 51 males;mean age was 40.3 ± 13.8 years). Tumor location was: frontal lobe (44, 49.4%) and superior frontal gyrus (30, 33.7%). 1p19q data were available in 49 patients. Twenty-nine cases were co-deleted (59.2%). There was no significant difference in the incidence of 1p19q co-deletion between superior frontal gyrus tumors vs. other frontal tumors or extra-frontal tumors (p?= 0.45). Follow up of at least 3 months after diagnosis was available in 79 patients (mean follow up: 93.2 months). In recurrence analysis, recurrence by 1p19q status and recurrence by location revealed no significant differences. In analysis of progression, progression by 1p19q status and progression by location revealed no significant differences. An analysis of deaths for the sample, deaths by 1p19q status and deaths by location revealed no significant differences. There was a higher death rate among patients >50 years of age, however this, too, was not significant.?There did not appear to be any advantage in recurrence rate, progression free survival, or life expectancy for tumors located in the frontal lobe or superior frontal gyrus. 1p19q co-deletion did not appear to confer an advantage as measured by time to recurrence, time to progression, or overall survival. Other than age, eloquent location, Karnofsky status, and overall tumor size as reported by others, tumor location and 1p19q status in low grade oligodendrogliomas are not currently predictive of survival.

关键词： grade II Oligodendrogliomas Frontal Lobe Superior Frontal Gyrus 1p19q Isocitrate Dehydrogenase 1