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The carrying capacity for vegetation of forest land across China:Near real-time monitoring and short-term forecasting based on satellite observation

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Geography and Sustainability 2024年第3期5卷 415-429页

作者： Huiqian Yu nan lu Bojie Fu lu Zhang Shufen Pan State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China Faculty of Geographical Science Beijing Normal UniversityBeijing 100875China College of Forestry Wildlife and EnvironmentAuburn UniversityAL 36849USA Department of Engineering Boston CollegeChestnut HillMA 02467USA

Ecological restoration projects implemented over the past 20 years have substantially increased forest coverage in China,but the high tree mortality of new afforestation forest remains a challenging but unsolved *** is still not clear how much vegetation can be sustained by the forest lands with given water,energy and soil conditions,i.e.,the carrying capacity for vegetation(CCV)of forest lands,which is the prerequisite for planning and implementing forest restoration ***,we used a simplified method to evaluate the CCV across forest lands ***,based on leaf area index(LAI)dataset,we use boosted regression tree and multiple linear regression model to analyze the CCV during 2001-2020 and 2021-2030 and explore the contribution of environmental *** find that there are three typical regions with lower CCV located in the Loess Plateau and the southern region of the Inner Mongolia Plateau,the Hengduan Mountain region,and the Tianshan *** importantly,the vegetation in the regions near the dry-wet climate transition zone show excess local carrying capacity for vegetation over the past two decades and they are more susceptible to potential climatic *** comparison,in the Greater Khingan Mountains and Hengduan Mountains,there is high potential to improve the forest ***,precipitation and soil affects the CCV by shaping the vegetation in the optimal *** indicates that more consideration should be given to restrictions of regional environmental constraints when planning afforestation and forest *** study has important implications for guiding future forest scheme in China.

关键词： Carrying capacity for vegetation Leaf area index Ecosystem restoration Forest management

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A Scalable Pillar Layered Metal-Organic Framework for Natural Gas Purification

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Chemical Research in Chinese Universities 2024年第4期40卷 675-681页

作者： lu nan LAN Lan GAO Qiang LI Na BU Xian-He School of Materials Science and Engineering Nankai UniversityTianjin300350P.R.China State Key Laboratory of Elemento-Organic Chemistry College of ChemistryNankai UniversityTianjin300071P.R.China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang212003P.R.China

One-step harvest of high-purity methane(CH_(4))from ternary propane/ethane/methane(C_(3)H_(8)/C_(2)H_(6)/CH_(4))mixtures remains a desirable yet challenging goal for natural gas ***,adsorbents either suffer from high capacity and selectivity,or are caught in a dilemma of scalable ***,we demonstrate a scalable pillar layered metal-organic framework Ni-MOF for highly efficient one-step CH_(4)***-MOF exhibits high C_(2)H_(6)and C_(3)H_(8)uptakes of 83.3 and 86.1 cm^(3)/g at 298 K and 100 kPa and remarkable C_(2)H_(6)/CH_(4)(50/50,volume ratio,21.5)and C_(3)H_(8)/CH_(4)(50/50,volume ratio,212.0)***,high C_(2)H_(6)(42.2 cm^(3)/g at 10 kPa)and C_(3)H_(8)(64.7 cm^(3)/g at 5 kPa)capacities in the low-pressure region at 298 K were realized on Ni-MOF,suggesting the strong affinities of Ni-MOF towards C_(2)H_(6)and C_(3)H_(8).Furthermore,the dynamic breakthrough experiments revealed that purifying CH_(4)from natural gas in one-step can be achieved in Ni-MOF with high-purity(>99.8%)and productivity(346.0 cm^(3)/g).Most significantly,the production of Ni-MOF can be scalably synthesized at room temperature,rendering it promising potential for industrial *** combined advantages of exceptional separation performance,scalability,and cycle stability of Ni-MOF pave the way for one-step CH_(4)purification from natural gas.

关键词： Metal-organic framework Adsorption and separation Natural gas purification Scale-up synthesis

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Structural transformation from Waugh-type to Keggin-type polyoxomolybdate-based crystalline material for photo/electrocatalysis

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Rare Metals 2024年第5期43卷 2241-2250页

作者： Pei-Sen Wang Zi-Tong Wang Ya-Ya Tan Peng Chen Xue-Cheng Zhang lu-nan Zhang Yong-Ge Wei lu-Bin Ni School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education Department of ChemistryTsinghua UniversityBeijing 100084China State Key Laboratory of Natural and Biomimetic Drugs Peking UniversityBeijing100191China

An inorganicDorganic hybrid crystalline material(SiMo_(12)O_(40))[Cu(2,2'-bipy)_(2)]_(2)·2H_(2)O(Complex 1,2,2'-bipy=2,2'-bipyridine)was synthesized for the first time by using 2,2'-bipy and transition metal copper to convert Waugh-type polyoxometalate[MnMo_(9)O_(3)_(2)]_(6-)into a Keggin polyoxometalate structure[SiMo_(12)O_(40)]^(4-)under hydrothermal conditions in glass *** crystal tests and a series of characterizations were carried out on Complex *** structure of Complex 1 is composed of[SiMo_(12)O_(40)]^(4-)and[Cu^(Ⅱ)(2,2'-bipy)_(2)]^(2+).The five-coordinated Cu is connected to two 2,2'-bipy through CuDN bonds,forming an approximately square ***,Complex 1 exhibited good photocatalytic performance for methylene blue degradation and electrocatalytic nitrite reduction properties simultaneously.

关键词： Polyoxometalates Inorganic-organic hybrid materials Photocatalytic Electrocatalytic

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Characteristics and geological significance of carbon and oxygen isotopes of the Permian lucaogou Formation dolomite in the southern Junggar Basin, northwestern China

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Journal of Palaeogeography 2024年第4期13卷 862-882页

作者： Gang Liu Guo-Zhi Wang Na Li Hong-Ling He nan-nan lu Qing Lei Zi-Ang Wang College of Earth and Planetary Sciences Chengdu University of Technology National Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of Technology Hebei Survey Institute of Coal Geology Sichuan Earthquake Agency

Anomalously positive δ13C values in ancient dolomites are very *** gray argillaceous rocks of the lacustrine sediments of the Permian lucaogou Formation are important source rocks in the Junggar Basin,and dolomites of varying thicknesses from 10 cm to 150 cm are often interspersed in argillaceous *** on the study of petrographic sections,this paper systematically analyzes the carbon and oxygen isotopes of dolomite and discusses the causes of abnormally high carbon isotope values and their significance in reconstructing paleoenvironment and *** results show that carbon isotope values are abnormally high in the dolomite of lucaogou Formation,and the δ13C value is between+3.2‰PDB and+19.6‰PDB,with an average of+9.7‰*** δ18O values range from-17.4‰PDB to-1.7‰PDB,with an average of-8.1‰*** the lower part to the upper part of the lucaogou Formation,the carbon isotope value gradually increases and becomes increasingly positive,and the carbon isotope of the dolomite deposited near the shore is more positive than that of the dolomite deposited far from the *** anomalously positive δ13C of the dolomite is mainly caused by microbial methanogenesis,with some contribution from *** are mainly distributed at the redox *** controls the salinity and fluctuation of the redox interface in sedimentary *** positive deviation difference in carbon isotopes between nearshore and offshore sedimentary dolomites may be related to the location of the redox interface during ***,the petrographic features and carbon and oxygen isotope signatures of the sections reflect the gradual evolution of the paleolake from a hydrologically open environment to a hydrologically closed one and the possible transition of the paleoclimate from a relatively warm to an arid condition,which is possibly a geochemical response to global climate change in the Permian period.

关键词： Junggar Basin lucaogou Formation Dolomite Positive carbon isotope anomaly Paleoenvironment

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Differential distribution of fibrovascular proliferative membranes in 25-gauge vitrectomy for proliferative diabetic retinopathy

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International Journal of Ophthalmology(English edition) 2024年第8期17卷 1462-1468页

作者： nan lu Shi-Lin Yang Shuo Guo Dong-Ni Yang Li Liu Chun-Hui Fan Ying Guo Jian Liu Wei Zhao Department of Ophthalmology the First Hospital of QinhuangdaoQinhuangdao 066000Hebei ProvinceChina School of Control Engineering Northeastern University at QinhuangdaoQinhuangdao 066004Hebei ProvinceChina

AIM:To analyze the distribution of fibrovascular proliferative membranes(FVPMs)in proliferative diabetic retinopathy(PDR)patients that treated with pars plana vitrectomy(PPV),and to evaluate the outcomes ***:This was a retrospective and cross-sectional *** 25-gauge(25-G)PPV cases operated for PDR from May 2018 to April *** to the FVPMs images outlined after operations,subjects were assigned into three groups:arcade type group,juxtapapillary type group,and central type *** patients were followed up for over one *** characteristics,operation-related variables,postoperative parameters and complications were ***:Among 103 eyes recruited,the FVPMs distribution of nasotemporal and inferiosuperioral was significantly different(both P<0.01),with 95(92.23%)FVPMs located in the nasal quadrants,and 74(71.84%)in the *** eyes with a central FVPM required the longest operation time,with silicon oil used in most patients,generally combined with tractional retinal detachment(RD)and rhegmatogenous RD,the worst postoperative bestcorrected visual acuity(BCVA)and the highest rates of recurrent RD(all P<0.05).FVPM type,age of onset diabetes mellitus,preoperative BCVA,and combined with tractional RD and rhegmatogenous RD were significantly associated with BCVA improvement(all P<0.05).Compared with the central type group,the arcade type group had higher rates of BCVA ***:FVPMs are more commonly found in the nasal and inferior mid-peripheral retina in addition to the area of arcade *** 25-G PPV for treating PDR eyes with central FVPM have relatively worse prognosis.

关键词： proliferative diabetic retinopathy fibrovascular proliferative membrane 25-gauge pars plana vitrectomy

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抖音短视频中的网络营销策略

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山西财经大学学报 2024年第S1期46卷 142-144页

作者：鲁楠郑州商学院党委宣传部河南郑州451200

在当今互联网时代,网络对人们的学习、生活和工作都带来了强烈冲击。尤其是在市场营销方面,传统营销手段已经无法满足企业的需求,网络营销逐渐成为企业获取竞争优势的重要手段。作为网络营销的新兴领域,社交媒体营销在社会化媒体时代具... 详细信息

在当今互联网时代,网络对人们的学习、生活和工作都带来了强烈冲击。尤其是在市场营销方面,传统营销手段已经无法满足企业的需求,网络营销逐渐成为企业获取竞争优势的重要手段。作为网络营销的新兴领域,社交媒体营销在社会化媒体时代具有重要地位,其中最具代表性的平台之一就是抖音短视频。首先阐述抖音短视频及其网络营销的定义与特点,指出抖音短视频在网络营销中的优势,然后就抖音短视频中的网络营销策略和实际应用等方面进行探讨,旨在帮助企业更好地应用抖音短视频进行网络营销。

关键词：抖音短视频网络营销市场营销竞争优势

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The Anticancer Potential of Quassinoids-A Mini-Review

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Engineering 2024年第7期38卷 27-38页

作者： Cai lu Si-nan lu Di Di Wei-Wei Tao lu Fan Jin-Ao Duan Ming Zhao Chun-Tao Che Jiangsu Collaborative Innovation Center of Chinese Medicinal Resource Industrialization Nanjing University of Chinese MedicineNanjing 210023China National and Local Collaborative Engineering Center of Chinese Medicinal Resource Industrialization and Formulae Innovative Medicine Nanjing University of Chinese MedicineNanjing 210023China School of Chinese Medicine&School of Integrated Chinese and Western Medicine Nanjing University of Chinese MedicineNanjing 210023China School of Medicine&Holistic Integrative Medicine Nanjing University of Chinese MedicineNanjing 210023China Department of Pharmaceutical Sciences College of PharmacyUniversity of Illinois ChicagoChicagoIL 60612USA

The anticancer potential of quassinoids has attracted a great deal of attention for decades,and scientific data revealing their possible applications in cancer management are continuously increasing in the *** from the potent cytotoxic and antitumor properties of these degraded triterpenes,several quassinoids have exhibited synergistic effects with anticancer *** article provides an overview of the potential anticancer properties of quassinoids,including their cytotoxic and antitumor activities,mechanisms of action,safety evaluation,and potential benefits in combination with anticancer drugs.

关键词： Quassinoid Anticancer potential Antiproliferative mechanism Safety evaluation Synergistical combination with anticancer drugs

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Performance of nutritional and inflammatory markers in patients with pancreatic cancer

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World Journal of Clinical Oncology 2024年第8期15卷 1021-1032页

作者： Jie-nan lu lu-Sha Zhou Shuai Zhang Jun-Xiu Li Cai-Juan Xu Department of Nursing The Second Affiliated HospitalZhejiang University School of MedicineHangzhou 310009Zhejiang ProvinceChina

BACKGROUND Systemic inflammation and nutrition play pivotal roles in cancer progression and can increase the risk of delayed recovery after surgical *** To assess the significance of inflammatory and nutritional indicators for the prognosis and postoperative recovery of patients with pancreatic cancer(PC).METHODS Patients who were diagnosed with PC and underwent surgical resection at our hospital between January 1,2019,and July 31,2023,were enrolled in this retrospective observational cohort *** the data were collected from the electronic medical record *** biomarkers-the albumin-to-globulin ratio,prognostic nutritional index(PNI),systemic immune–inflammation index(SII),neutrophil-to-lymphocyte ratio(NLR),platelet-to-lymphocyte ratio(PLR),nutritional risk index(NRI),and geriatric NRI were *** A total of 446 patients with PC met the inclusion criteria and were subsequently *** with early postoperative discharge tended to have higher PNI values and lower SII,NLR,and PLR values(all Plue emerged as an independent risk factor influencing early recovery after ***,both univariable and multivariable Cox regression analyses revealed that the PNI value was the strongest prognostic marker for overall survival(OS;P=0.028)and recurrence-free survival(RFS;Plue was established at 47.30 using X-tile *** in the PNI-high group had longer OS(P<0.001)and RFS(P=0.0028)times than those in the PNI-low *** Preoperative systemic inflammatory-nutritional biomarkers may be capable of predicting short-term recovery after surgery as well as long-term patient outcomes.

关键词： Pancreatic cancer Inflammation and nutrition Biomarker Postoperative recovery Prognosis

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堆载和固结对高饱和度废弃黏土抗剪强度影响

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中国环境科学 2024年第8期44卷 4446-4454页

作者：徐辉王锦楠李升智王璐楠詹良通浙江理工大学建筑工程学院浙江杭州310018 浙江理工大学科技与艺术学院浙江绍兴312369 浙江大学软弱土与环境土工教育部重点实验室浙江杭州310058

以杭州某基坑开挖渣土为研究对象,开展了24组大尺寸固结-直剪试验,研究了瞬时、阶梯型和斜坡型3种加载方式下高饱和度黏土固结过程抗剪强度的变化规律.结果表明,在上覆荷载作用下,土体产生瞬时压缩,压缩量随荷载的增大而增加;在3种加载... 详细信息

以杭州某基坑开挖渣土为研究对象,开展了24组大尺寸固结-直剪试验,研究了瞬时、阶梯型和斜坡型3种加载方式下高饱和度黏土固结过程抗剪强度的变化规律.结果表明,在上覆荷载作用下,土体产生瞬时压缩,压缩量随荷载的增大而增加;在3种加载方式下,当最终荷载相同时,最终沉降量较为接近;剪切曲线为应变硬化型,初始切线模量和最终剪应力均随固结度或上覆荷载的增大而提高;加载方式对初始切线模量有一定影响,对最终剪应力影响较小;抗剪强度随固结度的增长呈线性增大趋势,增大幅度随荷载的增大而显著;在3种加载方式下,当上覆荷载和固结度相同时,抗剪强度基本接近.基于试验结果,建立了高饱和度黏土固结过程抗剪强度预测模型,并利用本文试验数据和文献数据验证了其可靠性.模型分析结果表明:随着固结度的增长,抗剪强度包络线截距呈线性增大,而弯曲程度呈线性减小.在高饱和度废弃黏土堆填工程中,可采用本文建立的模型来预测不同堆填方式下土体固结过程的抗剪强度.

关键词：高饱和度黏土固结度堆载方式抗剪强度

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循环改进健康教育对人工流产患者术后生殖保健及创伤后成长的影响

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中国临床研究 2024年第9期37卷 1448-1452页

作者：冒文盈鲁南南京医科大学第一附属医院生殖中心江苏南京210029

目的探讨对进行人工流产的患者使用循环改进健康教育是否可以改善其创伤后恢复状况及生殖保健结局。方法选取2022年2月至12月南京医科大学第一附属医院收治的人工流产患者144例作为研究对象,用数字随机法将患者分为研究组(n=72)和对照组... 详细信息

目的探讨对进行人工流产的患者使用循环改进健康教育是否可以改善其创伤后恢复状况及生殖保健结局。方法选取2022年2月至12月南京医科大学第一附属医院收治的人工流产患者144例作为研究对象,用数字随机法将患者分为研究组(n=72)和对照组(n=72),对照组患者采用常规健康教育方法,研究组在对照组护理方案的基础上接受PDCA循环改进健康教育方法,比较两组患者干预后创伤后成长评定量表(PTGI)评分情况、并发症发生情况、术后重复流产率及术后备孕成功率,分析循环改进健康教育方法的重要性。结果干预后,与对照组比较,研究组患者PTGI量表中新的可能性、个人力量、精神变化和对生活的欣赏四个维度评分及总分,以及术后6个月长效可逆避孕措施使用率增高(P<0.05),术后辅助生殖就诊率增高(95.24%vs 72.73%,χ^(2)=7.990,P=0.005),新发不孕症率降低(50.00%vs 84.38%,χ^(2)=9.268,P=0.002)。结论PDCA循环改进健康教育能够有效改善人工流产患者生殖保健意识、改善创伤后成长,减少不孕不育的发生,有较高的应用价值。

关键词：生殖保健人工流产 PDCA循环健康教育创伤后成长

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