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Journal of Wuhan University of Technology(Materials Science) 2020年第2期35卷 384-392页

作者： zhu xinhua JIA Xuhong College of Civil Aviation Safety Engineering Civil Aviation Flight University of ChinaGuanghan 618307China

The products of monoammonium phosphate containing Cr^3+resulted in disqualification,and further posed a serious threat to ecological environment and human beings.Herein,the porous adsorbent of fluor(calcium silicate)composites(FCSc)was prepared by hydrothermal method using diatomaceous earth,hydrated lime and additive(NaF)as raw materials,which was characterized and used for the removal of Cr^3+from monoammonium phosphate solutions.The effects of different parameters,such as solution pH,initial Cr^3+concentration,temperature and contact time on the adsorption of Cr^3+onto FCSc were investigated in details.The results indicated that the adsorption process was in agreement with the pseudo-second-order kinetic model and Freundlich isotherm.The spontaneous and endothermic nature of the adsorption process was obtained by analyzing various thermodynamic parameters(△G0,△H0,and△S0).In addition,computational monte carlo simulations between Cr3+ions and FCSc were conducted to elucidate the adsorption mechanism.Such kind of porous adsorbent provided a potential application in the removal of impurities from monoammonium phosphate industry.

关键词： fluor(calcium silicate)composites monoammonium phosphate solutions chromium(Ⅲ) removal monte carlo simulations

2000—2020年中国耕地旱改水空间格局演变及其适应性管理

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农业工程学报 2024年第4期40卷 292-303页

作者：郭维红蒋非非马静朱新华陈浮中国矿业大学公共管理学院徐州221116 河海大学公共管理学院南京211100

灌溉农业对粮食高产稳定至关重要。近20年中国大力推行旱改水型农田整治,但旱改水的空间格局不清、旱改水转换适宜性不明,限制了旱改水适应性管理及耕地科学保护和永续利用。为此,利用2000—2020年5期30 m×30 m遥感数据,揭示中国耕地... 详细信息

灌溉农业对粮食高产稳定至关重要。近20年中国大力推行旱改水型农田整治,但旱改水的空间格局不清、旱改水转换适宜性不明,限制了旱改水适应性管理及耕地科学保护和永续利用。为此,利用2000—2020年5期30 m×30 m遥感数据,揭示中国耕地旱改水空间格局及其转换特征,并构建地形、气候、土壤与耕作4个维度的适宜性评价体系,评估旱改水工程实施的空间匹配效果,探索适应性管理分区与策略。结果表明:1)2000—2020年全国旱改水耕地面积达1297.04万hm^(2),占耕地总面积的7.31%,主要分布于黑龙江东部、河南中部、四川东部和江苏中部;2)2000—2020年全国旱改水耕地中17.70%为勉强匹配,11.54%为不匹配,旱改水工程实施的总体效果不佳;3)未来应划分不同的旱改水适应性管理分区,按适宜性优先级制定针对规划、利用和服务的差异化旱改水整治策略,研究可为耕地保护、国土空间生态保护和修复规划及两区划定等提供科学依据。

关键词：土地整治耕地灌溉旱改水保护适宜性评价适应性管理

Linked-Tree: An Aggregate Query Algorithm Based on Sliding Window over Data Stream

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Wuhan University Journal of Natural Sciences 2006年第5期11卷 1114-1119页

作者： YU Yaxin WANG Guoren SU Dong zhu xinhua School of Computer Science and Engineering Northeastern University Shenyang 110004 I.iaoning China Neusoft Group Ltd Shenyang 110179 LiaoningChina

How to process aggregate queries over data streams efficiently and effectively have been becoming hot re search topics in both academic community and industrial community. Aiming at the issues, a novel Linked-tree algorithm based on sliding window is proposed in this paper. Due to the proposal of concept area, the Linked-tree algorithm reuses many primary results in last window and then avoids lots of unnecessary repeated comparison operations between two successive windows. As a result, execution efficiency of MAX query is improved dramatically. In addition, since the size of memory is relevant to the number of areas but irrelevant to the size of sliding window, memory is economized greatly. The extensive experimental results show that the performance of Linked-tree algorithm has significant improvement gains over the traditional SC （Simple Compared） algorithm and Ranked-tree algorithm.

关键词： data streams sliding window aggregate query area hop

不同温度下氟碳链长度对表面活性剂理化性能的影响

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消防科学与技术 2024年第6期43卷 855-859页

作者：朱新华黄河张宇强中国民用航空飞行学院民航安全工程学院四川广汉618307 民机火灾科学与安全工程四川省重点实验室四川广汉618307 四川省全电通航飞行器关键技术工程研究中心四川广汉618307

基于3种不同氟碳链长度的表面活性剂,研究温度(0~40℃)对氟碳表面活性剂理化性能(表面活性、发泡性能和铺展性能)的影响。结果表明,随着温度的升高,氟碳表面活性剂的临界胶束浓度(CMC)增大,表面张力(γ_(CMC))降低,且表面活性剂的氟碳... 详细信息

基于3种不同氟碳链长度的表面活性剂,研究温度(0~40℃)对氟碳表面活性剂理化性能(表面活性、发泡性能和铺展性能)的影响。结果表明,随着温度的升高,氟碳表面活性剂的临界胶束浓度(CMC)增大,表面张力(γ_(CMC))降低,且表面活性剂的氟碳链越长,其形成胶束的能力越强,其中FC8表面活性剂溶液的CMC最小(0.23 mmol/L),γ_(CMC)值最低(15.07mN/m);低温下氟碳表面活性剂发泡倍数最低(特别是FC4在0℃时仅为3.70倍),升温到20℃时发泡倍数达到最佳(6.00~8.73倍),继续升温对发泡倍数影响不大,且相同温度下氟碳链越长发泡倍数越大,FC8的发泡倍数在20℃时达到8.73倍;表面活性剂铺展系数(S)随温度的升高而增大,当温度达到20℃时S的变化趋于平缓,且氟碳链越长越有利于降低单位面积表面活性剂的消耗量,节约成本。由此可见,低温对短氟碳链表面活性剂性能影响较大,特别是发泡倍数低达不到使用要求,若应用在水成膜泡沫灭火剂中还需进行复配提高其使用性能。

关键词：氟碳链表面活性剂表面张力发泡性能铺展性能

关系、关键与进路：“大思政课”建设的三重维度

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中国轻工教育 2024年第2期27卷 14-21页

作者：朱新华张桐天津科技大学

“大思政课”以其独特范式为思政课改革创新注入强劲动力。善用“大思政课”就要站在宏阔的视野下，从“大思政课”建设的关系、关键与进路三重层面重新审视提高思政课教学实效的应然路径。立足于“思政小课堂”与“社会大课堂”、思政... 详细信息

“大思政课”以其独特范式为思政课改革创新注入强劲动力。善用“大思政课”就要站在宏阔的视野下，从“大思政课”建设的关系、关键与进路三重层面重新审视提高思政课教学实效的应然路径。立足于“思政小课堂”与“社会大课堂”、思政课与课程思政、“大思政课”与思想政治工作之间相互交织的关系，落实好“大思政课”为党育人、为国育才的时代要求。从“大课堂”“大资源”“大师资”等要素出发准确把握“大思政课”建设的关键。在推进立德树人根本任务的育人进程中为“大思政课”建设描绘“路线图”、种好“责任田”、共筑“同心圆”,以高站位和大情怀培养堪当民族复兴重任的时代新人。

关键词： “大思政课” 关键实践路径

高高原受限空间内小尺度油池火燃烧特性试验研究

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消防科学与技术 2024年第2期43卷 161-167页

作者：代尚沛贾旭宏丁思婕朱新华中国民用航空飞行学院民机火灾科学与安全工程四川省重点实验室四川广汉618307 康定机场高高原航空安全实验室四川康定626000

为研究我国高高原地区的受限空间内液体燃料小尺度油池火燃烧特性,在高高原康定机场自主搭建受限空间内油池火的试验平台。共选取3类典型液体燃料(航空煤油、航空汽油、正庚烷)进行燃烧试验,测量火焰高度、火焰温度和烟气成分等变化规律... 详细信息

为研究我国高高原地区的受限空间内液体燃料小尺度油池火燃烧特性,在高高原康定机场自主搭建受限空间内油池火的试验平台。共选取3类典型液体燃料(航空煤油、航空汽油、正庚烷)进行燃烧试验,测量火焰高度、火焰温度和烟气成分等变化规律,研究了高高原受限空间内小尺度油池火行为。研究发现:在高高原地区,正庚烷稳定燃烧阶段的平均火焰高度可以通过模型L/D=k+0.254Q^(2/5)/D表示,其中,火焰高度与压力之间的关系式为L/D~p^(-2/9)。3种燃料的火焰最高温度均超过600℃,而羽流轴线温升与火焰高度呈现-5/3的指数关系。产烟速率则表现出对环境压力的依赖性,其关系可表示为:v~p^(-1/3)。

关键词：高高原受限空间油池火火焰高度火焰温度烟气成分

Design and test of the bilateral throwing soil-covering device for straw mulching machine in orchards

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International Journal of Agricultural and Biological Engineering 2023年第1期16卷 162-171页

作者： xinhua zhu Xiang Gao Xudong Li Shaojie Xu College of Mechanical and Electronic Engineering Northwest A&F UniversityYangling 712100ShaanxiChina Weichai Lovol Heavy Industry Co. Ltd.Weifang 261200ShandongChina

Aiming to lack the function of soil covering in the developed orchard straw mulching machine(OSM),a kind of bilateral counter-throwing soil-covering device was developed to eliminate the orchard fire risk caused by the straw layer.The soil-covering device was suspended at the rear of the OSM.Its core component was a pair of throwing wheels installed on both sides of a frame.Hydraulic motors drove the throwing wheels to take soil on-site and cover the straw layer.The adjustment range of the space between the throwing wheels on both sides was 1.4-2.1 m.Based on the analysis of soil-covering quantity,soil-covering width,thickness uniformity of soil layer,and power consumption,the key parameters such as the radius,the number of the vane,and the minimum rotation speed of the throwing wheels were determined.It was proved that the thickness uniformity of the soil layer by bilateral counter-throwing was better than by unilateral,and bottom throwing was better than top throwing.The blade of the soil cutter consisted of a straight blade and a curved blade,and the sliding-cutting angle was 14°-40°.The field test results showed the soil-covering device had good performance with a width of 1.4-2.2 m,a thickness of the soil-covering layer(TSL)of 23.2-40.7 mm,a standard deviation(SD)of 1.4-2.9 mm,width uniformity of 100%,and leakage rate of zero.The established model,between the thickness of soil-covering layer and trenching depth,throwing angle,and rotation speed of the throwing wheels,has a determination coefficient of 0.9757 and can be used to guide the operating parameters.The soil cutter reduced the power consumption and impact load of the throwing wheels by 64.77%and 60.88%,respectively.This work provides a type of new equipment for the mechanization technology of straw mulching in arid and semi-arid orchards.

关键词： orchard straw mulching mechanization soil-covering device counter-throwing uniformity

超皮秒激光联合透明质酸注射在面部年轻化治疗中的应用

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中国美容医学 2024年第1期33卷 91-95页

作者：朱新华张二佳付梦瑶中国航天科工集团七三一医院皮肤及整形外科北京100074

目的:探讨超皮秒激光联合透明质酸注射进行面部年轻化治疗的效果。方法:选择2021年1月-2022年6月在笔者医院要求进行面部年轻化治疗的就医者99例,按随机数字表法分为A组(n=33,单纯透明质酸治疗)、B组(n=33,单纯超皮秒激光治疗)、C组(n=... 详细信息

目的:探讨超皮秒激光联合透明质酸注射进行面部年轻化治疗的效果。方法:选择2021年1月-2022年6月在笔者医院要求进行面部年轻化治疗的就医者99例,按随机数字表法分为A组(n=33,单纯透明质酸治疗)、B组(n=33,单纯超皮秒激光治疗)、C组(n=33,超皮秒激光联合透明质酸治疗)。评价疗效,对比皮肤生理指标、皮肤屏障功能、不良反应。结果:治疗后,C组总有效率90.91%高于A组(69.70%)及B组(66.67%)(均P0.05)。结论:超皮秒激光联合透明质酸注射用于面部年轻化疗效肯定,可改善皮肤生理指标、皮肤屏障功能,且未增加不良反应。

关键词：超皮秒激光透明质酸面部年轻化临床效果美观度

Effect of inferior vena cava respiratory variability-guided fluid therapy after laparoscopic hepatectomy:a randomized controlled clinical trial

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Chinese Medical Journal 2023年第13期136卷 1566-1572页

作者： Jingjing Ji Qian Ma Yali Tian Xueduo Shi Luning Chen xinhua zhu Decai Yu Yudong Qiu Bingbing Li Department of Anaesthesiology Affiliated Drum Tower HospitalNanjing UniversitySchool of MedicineNanjingJiangsu 210008China Department of Hepatobiliary Pancreatic Surgery Affiliated Drum Tower HospitalNanjing UniversitySchool of MedicineNanjingJiangsu 210008China

Background:After major liver resection,the volume status of patients is still undetermined.However,few concerns have been raised about postoperative fluid management.We aimed to compare gut function recovery and short-term prognosis of the patients after laparoscopic liver resection(LLR)with or without inferior vena cava(IVC)respiratory variability-directed fluid therapy in the anesthesia intensive care unit(AICU).Methods:This randomized controlled clinical trial enrolled 70 patients undergoing LLR.The IVC respiratory variability was used to optimize fluid management of the intervention group in AICU,while the standard practice of fluid management was used for the control group.The primary outcome was the time to flatus after surgery.The secondary outcomes included other indicators of gut function recovery after surgery,postoperative length of hospital stay(LOS),liver and kidney function,the severity of oxidative stress,and the incidence of severe complications associated with hepatectomy.Results:Compared with patients receiving standard fluid management,patients in the intervention group had a shorter time to anal exhaust after surgery(1.5±0.6 days vs.2.0±0.8 days)and lower C-reactive protein activity(21.4[95%confidence interval(CI):11.9-36.7]mg/L vs.44.8[95%CI:26.9-63.1]mg/L)24 h after surgery.There were no significant differences in the time to defecation,serum concentrations of D-lactic acid,malondialdehyde,renal function,and frequency of severe postoperative complications as well as the LOS between the groups.Conclusion:Postoperative IVC respiratory variability-directed fluid therapy in AICU was facilitated in bowel movement but elicited a negligible beneficial effect on the short-term prognosis of patients undergoing LLR.Trial Registration:ChiCTR-INR-17013093.

关键词： Inferior vena cava respiratory variation Laparoscopic liver resection Goal-directed fluid therapy Postoperative intestinal function recovery Ultrasound

原发性肝癌肝切除术后早期低热卡肠外营养对围术期感染性并发症的影响

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国际外科学杂志 2024年第4期51卷 246-253,F0003页

作者：陈大宇杜瑶朱新华陆瑶陈潇远南京鼓楼医院药学部南京210008 南京鼓楼医院肝胆与肝移植外科南京210008 南京市临床药学中心南京210008 南京鼓楼医院护理部南京210008 浙江省人民医院(杭州医学院附属人民医院)肝胆胰外科、微创外科杭州310014

目的探究原发性肝癌肝切除术后早期低热卡肠外营养对围术期感染性并发症的影响。方法采用单中心前瞻性队列研究的方法收集2020年2月-2022年12月于南京鼓楼医院肝胆与肝移植外科行原发性肝癌肝切除术的205例患者的资料,按照术后72h内是... 详细信息

目的探究原发性肝癌肝切除术后早期低热卡肠外营养对围术期感染性并发症的影响。方法采用单中心前瞻性队列研究的方法收集2020年2月-2022年12月于南京鼓楼医院肝胆与肝移植外科行原发性肝癌肝切除术的205例患者的资料,按照术后72h内是否使用低热卡肠外营养分为低热卡组(n=108)与正常热卡组(n=97),分析早期肠外营养热量对围术期感染性并发症的影响。符合正态分布的计量资料以均数±标准差(x±s)表示,组间比较采用t检验;不符合正态分布的计量资料以M(Q1,Q3)表示,组间比较采用Wilcoxon秩和检验。计数资料组间比较采用x检验或Fisher精确检验。为了校正混杂因素的影响,按照术后30d随访期内是否发生感染性并发症进行分组比较,将术后感染性并发症的可能影响因素先进行单因素分析,再将单因素分析中有统计学意义的变量纳入多因素分析。结果共82例患者出现感染性并发症,发生率为40.0%。低热卡组的患者高血糖事件(17.6%比29.9%,P=0.038)及胃肠道反应发生率(12.0%比22.7%,P=0.043)明显低于正常热卡组,其他营养相关并发症组间差异无统计学意义(P>0.05)。单因素分析结果发现,低热卡肠外营养、肝细胞癌、GLIM标准的营养不良、开腹手术、大范围肝切除、围术期高血糖事件以及胸水或腹水为感染性并发症发生的潜在影响因素(P<0.05)。多因素分析结果提示,营养不良(OR=2.707,95%CI:1.153~6.354,P=0.022)、开腹手术(OR=2.103,95%CI:1.073~4.122,P=0.030)、围术期高血糖事件(0R=2.630,95%CI:1.228~5.631,P=0.013)以及患者存在胸水或腹水(0R=2.714,95%CI:1.388~5.306,P=0.004)是导致肝癌肝切除围术期感染性并发症的危险因素,而术后早期接受低热卡肠外营养(0R=0.388,95%CI:0.199~0.757,P=0.006)则是保护因素。结论对于肝癌肝切除患者,相比术后正常热卡肠外营养,早期接受低热卡肠外营养可以降低围术期感染性并发症的发生率,改善患者临床结局。

关键词：肝肿瘤营养支持胃肠外营养手术后并发症原发性肝癌围术期感染肠内营养