如何在单分区硬盘上取得多分区

通过对硬盘分区表的修改，实现将单个分区变成多个分区，从而达到一机安装多种操作系统。

三叉神经半月节膨大部单分区临床穿刺技术研究

目的探索半月神经节膨大部的眼区、上颌区、下颌区的单分区分别穿刺技术,及分别胞体射频治疗不同分支的三叉神经痛的可行性研究。方法不设定适应于所有患者、某一分区的固定穿刺路径,而在基于前期对尸体解剖和CT影像解剖研究基础上,采用3D Slicer软件分析2020年8月至2021年7月南通大学附属建湖医院神经外科就诊的三叉神经痛患者23例的术前CT数据,依据个体患者的责任分区节膨大中心点位置和其特有的颅骨解剖特点,设计仅适用于该特定个体、特定靶点的穿刺路径,具体方法如下:(1)在三叉神经管内口冠切面,多数病例可觅及眼区、上颌区、下颌区的直接征象,其横径占比约为1∶2∶2,无直接征象的依比例划分,在各分区的中心点作一标识;(2)顺纤维矢切面二维图像,节膨大下界的特征性标志是节窝,上界为Meckel腔上壁;各分区中心点至出颅孔中心(眼区-眶上裂、上颌区-圆孔、下颌区-卵圆孔)连线的矢切面图像,在节窝凹陷最深-Meckel腔最宽处标识该分区节膨大中心,并穿越中心以节窝长度标识中轴纤维走向;(3)分区节膨大中心标识点-卵圆孔连线,向外延长至皮肤,为进针点,向内延长到分区交界,形成穿刺路径;(4)侧入路穿刺受下颌骨阻挡的,采用"闭口-张口-过度张口"位设计,使下颌骨发生不同程度的前移、下移并向下后旋转,移开阻挡、开放穿刺通道,获得经下颌骨前缘、后缘或下颌切迹内的全程软组织穿刺路径;(5)设计以5 mm长度直电极+最大离轴3 mm的弯曲电极,制作多个小靶灶组合成立体靶灶,抵达责任分区的各方边界。全身麻醉下手术,按术前设计,以Xper CT成像,Xper Guide引导穿刺;以直电极贯穿节膨大责任分区制作顺轴靶灶,以弯曲电极偏离穿刺方向制作离轴靶灶,损害责任分区全境。以视觉模拟评分(VAS)评估治疗结果。结果共完成三叉神经痛患者23例,行半月节膨大部单分区穿刺25次(1例分别穿刺上颌区和下颌区;1例穿刺上颌区和眼区),其中穿刺眼区2次、上颌区10次、下颌区13次。过程均顺利,对设计的依从性好,术中影像全部保存。65℃连续射频19例次;60℃连续射频2例次;50℃连续射频2例次(均为眼区);脉冲射频(手动55℃)2例次。23例术后24 h内VAS均为0分;随访1~13个月,短期(术后1~7 d)复发3例,其中2例为脉冲射频(2/2例);无长时间随访出现复发的病例,VAS均为0分。短期复发的3例VAS在2~6分,其中65℃连续射频1例存在靶点误差,70℃连续射频再手术疼痛消失,VAS为0分;脉冲射频2例均复发,1例予65℃连续射频仍短期复发,目前VAS为6分,另1例放弃射频选择微血管减压术。65℃射频术后次日为中度触觉减退,并长期存在轻中度触觉减退;随访6个月以上的,仍有近半患者存在术侧食物颊下残留和对侧咀嚼。60℃连续射频病例少、随访时间短,术后次日均存在责任分区轻度触觉减退,不影响咀嚼;1~2周后触觉减退不明显。50℃连续射频均用于眼区,全麻醒后额部头皮轻微触觉减退,次日触觉正常。结论影像学设计、引导下三叉神经半月节膨大部眼区、上颌区、下颌区的单分区穿刺行胞体射频治疗三叉神经各分支疼痛是一项准确、有效、可行的技术。

生态环境分区管控与国土空间规划衔接分析思路探讨

“三线一单”生态环境分区管控、国土空间规划分别为生态环境部门、规划自然资源部门于“十三五”时期推出的立足于全域的空间分区管控制度。“三线一单”基于生态环境现状、以改善环境质量为核心,构建生态环境分区管控体系,并通过生态环境准入清单将环境管控指引要求落脚到分区空间。国土空间规划则以空间开发与保护为出发点、兼顾环境保护,旨在构建区域可持续发展的空间蓝图,更多的考虑对于未来发展的空间合理布局,实施土地用途管制。两项制度虽因主管部门职能职责差异导致侧重点有所不同、但在空间分区管控、生态环境保护方面存在交叉,若能做到有效衔接,则可从源头避免二者在后续实际管理中出现空间布局及准入等方面的指向性冲突或矛盾。通过对比重庆市某区县“三线一单”生态环境分区管控及国土空间分区规划划定技术路线,探讨生态环境分区管控与国土空间规划衔接分析思路,为后续两项制度衔接工作提供支撑。

变风量多分区空调系统新风量计算

介绍了变风量多分区系统的区域新风需求、新风分布、通风效率和单/双通道多分区循环系统,借鉴ANSI/ASHRAE标准62.1—2004提出的系统新风量计算方法给出了变风量多分区空调系统的新风量计算方法。该方法有助于在新风节能方面拓展设计思路。

N-S方程并行求解性能研究

N-S方程在CFD(computational fluid dynamics)领域有着广泛的应用。该文介绍了数值模拟CFD中N-S方程的两种求解方法:块三对角法和标量五对角法。在分析了求解过程的数据内在关系后,提出了用单分区和多分区进行区域分裂并行求解的不同策略,着重考虑了在一个消息传递型系统上求解的最小执行时间,并对数据相关性、通信开销、存储开销等相关性能给出了较详细的分析研究,最后给出了性能测试的部分结果。

Function Zoning of the Major Function Development-optimized County:A Case in Shangyu,Zhejiang

The 11th Five Year Plan has divided national functional zones in the basic unit of county-level administrative region.After implementation of national Major Function-oriented Zones (MFOZ) at prefecture and county levels,the spatial development sequence must be specified,development intensity must be limited,oriented zones must be designated and "red line" areas of spatial governance must be defined.In view of the above,choosing a typical county area and exploring its functional zoning after orienting its major functions will supply reference for carrying out the national spatial planning in the 12th Five Year Period,and it will also provide experience for the study of function regionalization which is the theme of MFOZ in the present academic circles.In this paper,the authors take Shangyu County as an example to study the general principles,train of thought of county-level functional regionalization in development-optimized areas,and to explore its reasonable functional zoning plan.Consequently,the authors present five principles and suggest a function-oriented zoning plan with 2 levels and 4 types.

Soil Erosion and Its Basic Characteristics at Karst Rocky-desertified Land Consolidation Area: A Case Study at Muzhe Village of Xichou County in Southeast Yunnan, China

Xichou County of Wenshan Zhuang and Miao Autonomous Prefecture in southeast Yunnan is one of the karst mountainous areas in southwest China showing typical rock desertification. During this study, we set up three soil erosion contrast test spots at Muzhe Village, Benggu Township, Xichou County, which was the birthplace of the Xichou rock-desertified land consolidation mode. The three spots included the terrace land spot （already consolidated land）, sloping land spot （unconsolidated sloping land under rock desertification）, and standard runoff spot （bare land spot）. In 2007, a whole-year complete observation was conducted during the rainy season and ＂rainfall-erosion＂ data were obtained for 32 times. Our analysis showed that during the entire observation period, the number of the rainfalls that led to soil erosion accounted for 34.04% of the number of all rainfalls and the amount of the rainfalls that led to soil erosion accounted for 84.17% of the total amount of all rainfalls. The average erosive rainfall standard in the three test spots was 11.0mm, slightly higher than the lO mm standard that has been adopted all over China, but lower than the 12.7 mm standard of the US and the 13.0 mm standard of Japan. According to single-factor analysis, the soil loss in the sloping land spot （L2） and that in the bare land spot （L3） are correlated to certain extent to manyother factors, including the single precipitation （P）, rainfall intensity during the maximum ten minutes （Lo）, rainfall intensity during the maximum 20 minutes （I2o）, rainfall intensity during the maximum 30 minutes （I30）, rainfall intensity during the maximum 40 minutes （I4o）, and rainfall intensity during the maximum 6o minutes （I60）. Among these factors, they are of the highest relativity with I6o. According to double-factor analysis, both L2 and L3 are of good relativity with P and I60. According to multi-factor analysis, L2 and L3 are also of good relativity with seven rainfall indexes, namely, P, Ia （average rainfall intensity）, L10, 120, I30, 140, and I60, with their related coefficient R reaching 0.906 and 0.914, respectively. The annual soil losses in the three test spots are widely different： 1030.70 t/km2.a in the terrace land spot, which indicates a low-level erosion; 12913.22 t/km2.a in the sloping land spot （unconsolidated spot）, some 12.5 times than that in the terrace land spot, which indicates an ultra-high-level erosion; and 19511.67 t/km2-a in the bare land spot, some 18.9 times than that in terrace land spot, indicating an acute erosion. These figures fully show that the Xichou rock-desertified land consolidation mode plays a significant role in soil conservation.

Retrospective analysis of prognostic factors for sixty osteosarcoma patients with local recurrence

Objective:The aim of this study was to identify prognostic factors and imply the appropriate management for local recurrent osteosarcoma.Methods:The clinical records of 60 patients with local recurrence osteosarcoma were reviewed between January 2002 and December 2010.The mean followed-up time for these patients was 49.1 months(range 13 to 143 months).The factors of age,gender,tumor site,tumor size,surgical procedure,neoadjuvant chemotherapy,frequency of primary postoperative adjuvant chemotherapy,lung metastasis,metastasis of other sites(except for lung) and treatment after local recurrence were selected as the measurements for this analysis.Kaplan-Meier method was used to measure the overall survival and post-recurrence survival.The univariate analysis was used to determine the prognostic factors related with survival by Log-rank test.The COX proportional-hazard regression model was used to analyze the correlation between the prognostic factor and the survival.Results:The median post-recurrence survival and overall survival of 60 patients were 32 months(95% confidence interval:16.2-47.8) and 55 months(95% confidence interval:39.3-70.7) respectively.The 2and 3-year cumulative survival rates were 81.7% and 55.4%,respectively.The Log-rank univariate analysis showed that age,gender,tumor size,metastasis of other sites(except for lung) and treatment after local recurrence were associated with the prognosis of osteosarcoma with local recurrence(P < 0.05).The Cox regression analysis revealed that gender(P = 0.016),metastasis of other sites(except for lung,P = 0.017) and treatment after local recurrence(P = 0.028) were the independent prognostic factors of osteosarcoma with local recurrence.On the other hand,the prognosis of local recurrent osteosarcoma was not associated with tumor site,surgical procedure,frequency of primary postoperative adjuvant chemotherapy,neoadjuvant chemotherapy and lung metastasis(P > 0.05).Conclusion:The independent prognostic factors for local recurrent osteosarcoma were the metastasis of other site(except for lung) and the treatment after local recurrence.The aggressive surgical treatment for local recurrence and distant metastasis could effectively improve the survival of local recurrent osteosarcoma.

Achievable Uplink Rate Analysis for Distributed Massive MIMO Systems with Interference from Adjacent Cells

This work focuses on the multicell multi-user distributed massive MIMO(DM-MIMO)systems,of which each user is equipped with single antenna and the base stations(BSs)consists of distributed antenna units. We first investigate the arbitrary BS antenna topology scenario. The derivation indicates that in this case the achievable uplink rate of an arbitrary user in central cell depends on both the number of BS's antennas and the users' access distance to each distributed antenna unit(DAU). As a result,the performance analysis based on the derivations is difficult. To overcome this issue and achieve clearer insight,we then consider a circularly distributed BS antenna array and obtain the asymptotic uplink rate of an arbitrary user by considering the asymptotic case where the number of antennas of BSs tends to infinity. It is achieved that the asymptotic uplink rate only depends on the distance from users' position to the center of reference cell. The presented numerical results show clearly that the distributed massive MIMO systems outperform the centralized ones. Moreover,it is also achieved that the interference from the adjacent cells imposes great impact on system performance. Besides this,in numerical analysis the averageasymptotic uplink rate of a user is presented,which is free of the users' position and only depends on the radius of circular antenna arrays. It is achieved the maximum average uplink rate would be achieved when the radius of circularly distributed antenna array goes to its optimization location.

Investigation of Red Meat Production in Turkey by ANOM Test

When comparing more than two groups means, the analysis of means （ANOM） can be used as an alternative to the one-way analysis of variance （ANOVA） F test. The ANOM provides a ＂confidence interval type of approach＂ that allows it to determine which, if any, of the x groups has a significantly different mean from the overall average of all the group means combined. The aim of this study was to show the application of a statistical technique （ANOM）, mostly used by agriculture, to determine differences between red meat production by period in Turkey. The production quantities of goat meat, mutton, buffalo meat and beef between the years 2010 and 2016 according to the period were taken from Turkish Statistical Institute （TSI）. As a result, the difference between meat productions was found to be significant.

Distribution characteristics of China's key cultural relic tourism resources and suggestions to its development and protection

SPSS13.0 was used to process the data of the 1-6 batch of key cultural relic conservation units promulgated by the State Administration of Cultural Heritage of China;and multi-element evaluation method was used to calculate the composite distribution index.The spatial distribution of cultural relics of provinces in China can be divided into four grades,namely:very rich areas,rich areas,poor areas and very poor areas;the article analyzes the characteristics of cultural resources in spatial and temporal distribution.The paper holds that(1)the distribution of China's cultural relic tourism resources is relatively concentrated,different sharply from region to region,with more Han nation's heritage,less relics of the ethnic minorities;(2) Henan,Hebei,Shaanxi,Shanxi Province are the main regions with heavy distribution of cultural resources;(3) relics appeared in specific time periods in China's history.Ming and Qing Dynasties,Sui,Tang and Five Dynasties,Song,Liao and Jin,the Western Han,Shang and Zhou dynasties,the New Stone Age are the major periods producing more cultural relics.This paper also analyzes relationships of the emergence of cultural relics with production technology,specific historical process,specific geographical location,political system,religion,national culture,customs,architectural styles and techniques of the traditional cultural educational system.Finally,the paper discusses the development and protection of heritage.

Impacts of Part-time Farming on Agricultural Land Use in Ecologically-vulnerable Areas in North China

Part-time farming has been increasing steadily in China. It is currently the largest segment among all the farm sectors in the country. Based on rural household survey data in Taipusi County as a case site ofecologically-vulnerable areas in North China, we firstly classify farm households into four types according to the proportion of non-farm income in total income, and then compare their agricultural land use patterns to empirically examine the impacts of part-time farming on agricultural land use in this area. The results suggest that non-farming households rent out all their land and give up farming, and this satisfies the expectation of other households to expand land area. The crop planting structure was not significantly different among the households, which reflected the farmers＇ will to pursuit labor productivity. Part-time farming households invest more capital and materials than full-time faming households because the income derived from non-farm employment relaxes the financial constraint of households. However, the amount of labor input of part-time farming households tends to be less, and farming practices are dominated by the elderly, female and laborers withrelative low educations.Yields of crops and the benefit of agricultural land use incline to reduce, which suggest that the potential of land use productivity is more elastic to labor inputs than capital inputs in the study area.

对照《纲要》下功夫深研细钻抓落实

云南德宏军分区今年以来多次组织广大官兵和职工深入学习中共中央关于《邓小平同志建设有中国特色社会主义理论学习纲要》,深研细钻《邓小平文选》一至三卷原文,使部队与民兵预备役建设方面取得了明显成绩。

Triangular element partition method with consideration of crack tip

In fracture simulation,how to model the pre-existing cracks and simulate their propagation without remeshing is an important topic.The newly developed triangular element partition method(TEPM)provides an efficient approach to this problem.It firstly meshes the cracked body regardless of the geometry integrity of the interesting object with triangular elements.After the meshing procedure is completed,some elements are intersected by cracks.For the element intersected by a crack,the TEPM takes the element partition technique to incorporate the discontinuity into the numerical model without any interpolation enrichment.By this approach,the TEPM can simulate fracture without mesh modification.In the TEPM,all the cracked elements are treated as the usual partitioned elements in which the crack runs through.The virtual node pairs(the intersection points of crack faces and elements)at the opposite faces of the crack move independently.Their displacements are respectively determined by their neighbor real nodes(nodes formatted in the original mesh scheme)at the same side of the crack.However,among these cracked elements,the element containing a crack tip,referred to as the crack tip element thereafter,behaves differently from those cut through by the crack.Its influence on the singular field at the vicinity of the fracture tip becomes increasingly significant with the element size increasing.In the crack tip element,the virtual node pair at the crack tip move consistently before fracture occurs while the virtual node pair separate and each virtual node moves independently after the fracture propagates.Accordingly,the crack tip element is automatically transformed into the usual partitioned element.In the present paper,the crack tip element is introduced into the TEPM to account for the effect of the crack tip.Validation examples indicate that the present method is almost free from the element size effect.It can reach the same precision as the conventional finite element method under the same meshing scheme.But the TEPM is much more efficient and convenient than the conventional finite element method because the TEPM avoids the troubles that the conventional finite element method suffers,e.g.,the meshing problem of cracked body,modification of mesh scheme,etc.Though the extended finite element method can also avoid these troubles,it introduces extra degrees of freedom due to node interpolation enrichment.Due to the simplicity of the present TEPM,it is believed that its perspective should be highly inspiring.

Antigenic analysis of grass carp reovirus using single-chain variable fragment antibody against IgM from Ctenopharyngodon idella

Grass carp （Ctenopharyngodon idella） is an important species of freshwater aquaculture fish in China. However, grass carp reovirus （GCRV） can cause fatal hemorrhagic disease in yearling populations. Until now, a strategy to define the antigenic ca- pacity of the virus＇s structural proteins for preparing an effective vaccine has not been available. In this study, some sin- gle-chain variable fragment antibodies （scFv）, which could specifically recognize grass carp IgM, were selected from a con- structed mouse naive antibody phage display cDNA library. The identified scFv C1B3 clone was shown to possess relatively higher specific binding activity to grass carp IgM. Furthermore, ELISA analysis indicated that the IgM level in serum from vi- rus-infected grass carp was more than two times higher than that of the control group at 5-7 days post infection. Moreover, Western blot analysis demonstrated that the outer capsid protein VP7 has a specific immuno-binding-reaction with the serum IgM from virus-infected grass carp. Our results suggest that VP7 can induce a stronger immune response in grass carp than the other GCRV structural proteins, which implies that VP7 protein could be used as a preferred immunogen for vaccine design.