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Triplet−Triplet Annihilation-Based Photon Upconversion with a Macrocyclic Parallel Dimer

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Precision Chemistry 2024年第10期2卷 539-544页

作者： Catherine H.Mulyadi Masanori Uji Bhavesh Parmar kana Orihashi Nobuhiro Yanai Department of Applied Chemistry Graduate School of EngineeringKyushu UniversityNishi-kuFukuoka 819-0395Japan Department of Chemistry Graduate School of ScienceThe University of TokyoBunkyo-kuTokyo 113-0033Japan CREST JSTKawaguchiSaitama 332-0012Japan

The integration of multiple chromophore units into a single molecule is expected to improve the performance of photon upconversion based on triplet−triplet annihilation(TTA-UC)that can convert low energy photons to higher energy photons at low excitation *** this study,a macrocyclic parallel dimer of 9,10-diphenylanthracene(DPA)with a precisely parallel orientation,named MPD-2,is synthesized,and its TTAUC properties are ***-2 shows a green-to-blue TTA-UC emission in the presence of a triplet sensitizer,platinum octaethylporphyrin(PtOEP).Compared to monomeric DPA,MPD-2 results in an enhancement of the spin statistical factor of TTA and a decrease in the excitation light intensity due to the intramolecular TTA *** obtained structure−property relationship provides important information for the further improvement of TTA-UC properties.

关键词： photon upconversion triplet−triplet annihilation macrocyclic parallel dimer spin statistical factor anthracene

Prediction of Low Heating Value of Sugar Cane Bagasse as a Fuel for Industrial Boilers in the High Relative Humidity Region: Case of Cameroon

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Open Journal of Applied Sciences 2024年第6期14卷 1604-1624页

作者： Pierre kana-Donfack Maxell Tientcheu-Nsiewe Denis Tcheukam-Toko César Kapseu Department of Mechanical Engineering College of Technology University of Buea Buea Cameroon Department of Fundamental Sciences and Engineering Technology School of Chemical Engineering and Mineral Industries University of Ngaoudr Ngaoudr Cameroon Department of Process Engineering National School of Agro-Industrial Science University of Ngaoundr Ngaoudr Cameroon

Many attempts have been made to estimate calorific value of bagasse using mathematical equations, which were created based on data from proximate, ultimate, physical and chemical analysis. Questions have been raised on the applicability of these equations in different parts of the globe. This study was initiated to tackle these problems and also check the most suited mathematical models for the Law Heating Value of Cameroonian bagasse. Data and bagasse samples were collected at the Cameroonian sugarcane factory. The effects of cane variety, age of harvesting, source, moisture content, and sucrose on the LHV of Cameroon bagasse have been tested. It was shown that humidity does not change within a variety, but changes from the dry season to the rainy season;the sugar in the rainy season is significantly different from that collected in the dry season. Samples of the same variety have identical LHV. LHV in the dry season is significantly different from LHV in the rainy season. According to the fact that this study was done for cane with different ages of harvesting, the maturity of Cameroonian sugarcane does not affect LHV of bagasse. Tree selected models are much superior tool for the prediction of the LHV for bagasse in Cameroon compared to others. The standard deviation of these validated models is around 200 kJ/kg compared to the experimental. Thus, the models determined in foreign countries, are not necessarily applicable in predicting the LHV of bagasse in other countries with the same accuracy as that in their native country. There was linear relationship between humidity, ash and sugar content in the bagasse. It is possible to build models based on data from physical composition of bagasse using regression analysis.

关键词： Sugarcane Bagasse Relative Humidity Ash Low Heating Value

Fruit Powder of Tetrapleura tetraptera in Local Feed on Some Zootechnical Performances of Juveniles of Clarias gariepinus in Concrete Tank

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Open Journal of Animal Sciences 2024年第2期14卷 56-69页

作者： Ngouana Tadjong Ruben Abdoulaye Abdoulaye kana Jean Raphaël Téguia Alexis Laboratory of Aquaculture and Demography of Fisheries Resources Aquaculture Department Institute of Fisheries and Aquatic Science of Yabassi University of Douala Douala Cameroon Laboratory of Animal Nutrition Department of Animal Science Faculty of Agronomy and Agricultural Sciences University of Dschang Dschang Cameroon

This study focused on the supplementation of four-sided spice fruit powder (Tetrapleura tetraptera) on some zootechnical performances of juveniles of Clarias gariepinus and was carried out from February 14 to July 20 at the Massoma Fish Farm of Bojongo Mbeidi located in the Littoral Region, Department of Wouri, Douala IV district. The farm benefits from a climate favorable to aquaculture activity. For this purpose, five (5) treatments were tested including T0+ (imported feed), T0-, T0.3, T0.4, and T0.5 respectively for the treatments with 0% supplemented food;0.3%;0.4% and 0.5% of Tetrapleura tetraptera powder. A total of 450 Clarias gariepinus fry with an initial average weight of 7 ± 1.5 g, were distributed in happas of 0.49 m2 each placed in Triplicate in a completely randomized device. Four isoprotein foods with 38% crude protein were formulated to feed these fry at 7% of their biomass per day for 15 days then to their fullness until the end of the experiment. Intermediate fishing was carried out every fortnight. 75 days later, the results recorded show that the highest average survival rate (96.44% ± 3.5%) was recorded with the subjects fed feed supplemented with 0.4% T. tetraptera powder. The average weight (120.93 ± 67.20), weight gain (113.93 ± 67.20), specific growth rate (3.64 ± 0.79% g/d) and total lengths and standard (26.43 ± 1.9 and 23.66 ± 1.76) the highest were recorded with the T0+ treatment (imported feed). The highest conditioning factor K (2.14 ± 0.15) was recorded with the treatment supplemented with 0.4% T. tetraptera. The lowest conversion ratio (1.28) was recorded with the treatment fed with imported blue crown food (T0+). Furthermore, the lowest production cost was recorded with the treatment supplemented with 0.4% T. tetraptera. It appears from this study that the juveniles of C. gariepinus better value the feed substituted with 0.4% of the powder of fou

关键词： Tetrapleura tetraptera Local Feed Zootechnical Performance Juvenile of Clarias gariepinus

可降解秸秆基地膜增韧改性及对水稻生长的影响

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林产化学与工业 2024年

作者：孙恩惠陈玲范肖东彭鵾 Gueguim kana Evariste Bosco 翟胜丞江苏省农业科学院农业资源与环境研究所农业农村部盐碱土改良与利用(滨海盐碱地)重点实验室江苏省有机固体废弃物资源化协同创新中心江苏大学农业工程学院夸祖鲁-纳塔尔大学农业工程与科学学院南京林业大学材料科学与工程学院

以氯化胆碱/尿素/微生物联合预处理秸秆纤维为原料，依次通过填充不同添加量的杨木纤维，调控湿强剂组合种类以及利用自主研发的纳米木质素聚合物作表面涂层，制备改性秸秆纤维基地膜，分析改性对可降解秸秆纤维基地膜力学性能、韧性、... 详细信息

以氯化胆碱/尿素/微生物联合预处理秸秆纤维为原料，依次通过填充不同添加量的杨木纤维，调控湿强剂组合种类以及利用自主研发的纳米木质素聚合物作表面涂层，制备改性秸秆纤维基地膜，分析改性对可降解秸秆纤维基地膜力学性能、韧性、疏水性、降解性及水稻生长等的影响。研究结果表明：杨木纤维的填充可有效降低细小秸秆纤维流失率；优选杨木纤维与秸秆纤维质量占比4:6，硫酸铝添加量1%、阳离子分散松香胶（CDR）1.5%，纳米木质素聚合物表层涂布量2～2.5g/m2时，获得的改性秸秆纤维基地膜（MSFM）抗张指数为30.33N·m/g、湿抗张指数9.23N·m/g、撕裂指数5.16mN·m2/g、耐破指数2.36kPa·m2/g，应变由0.48%提高到1.13%，增幅达135.42%，且表现出优异的疏水性和湿稳定性。地膜降解试验结果表明：第9周时MSFM 失重率达62%，同时盆栽试验期杂草抑制率达81.20%。且具有良好的土壤保温及水稻促生作用。生物降解秸秆纤维地膜能够从源头减少污染物和化石资源投入，在农田土壤覆盖应用领域前景广阔。

关键词：秸秆纤维可降解地膜增韧改性力学性能杂草防控增温促生

Effects of Fresh Cupressus sempervirens Leaves Infusion on Growth Performance, Intestinal Microbiota and Haemato-Biochemical Parameters in Broilers

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Open Journal of Animal Sciences 2024年第2期14卷 70-87页

作者： Donfack Mikael Noumbissi Marie Noël Bertine Ciemeni Michelle Aimee Tindo Tsamene Romario Evelyn Ngwa Bih Djamen Tchantchou Chamberlin Nyembo Kondo Camile Tsafong Jeatsa Franklain Necdem Tsafack Boris kana Jean Raphaël Animal Nutrition and Production Research Unit Department of Animal Sciences Faculty of Agronomy and Agricultural Sciences University of Dschang Dschang Cameroon Department of Animal Sciences and Plant Technology Faculty of Agronomic Sciences La Sapientia Catholic University of Goma Goma Democratic Republic of Congo

The accumulation of growth-promoting antibiotic residues in animal products and the resistance developed by bacteria in poultry farms has led to a search for natural compounds derived from plants. This study was designed to promote the production performance of broiler chickens using fresh Cupressus sempervirens leaves infusion. Fresh Cupressus sempervirens leaves were harvested, washed, chopped and ground to a paste using a blender and fermented for three days in a closed container at a rate of 500 g/L of water. The solution obtained was filtered and added at the rate of 2, 4, 6, 8 and 10 ml/L of drinking water. The chickens fed on the graded level of the solution were compared to a control ration without an additive and positive control group supplemented with 1 g antibiotic/kg feed. At the finisher phase and throughout the study period, water intake increased significantly (P 0.05) affected by the inclusion of Cupressus sempervirens infusion. Haematological parameters significantly (P < 0.05) increase independently of the rate of incorporation of the infusion into the drinking water, with the exception of RBCs, MCHT and PCT. Serum content in total protein, globulins, LDL cholesterol and triglycerides were significantly (P < 0.05) high with 8 and 10 ml Cupressus sempervirens infusion/litre drinking water as compared to all other treatments. AST, ALT, urea, creatine, albumin, total cholesterol and HDL-cholesterol were not significantly affected. The lactic acid bacteria load increased significantly (P E. coli and salmonella counts decreased significantly (P < 0.05)

关键词： Broilers Cupressus sempervirens Growth Performance Haemato-Biochemical Parameters Intestinal Microbiota

An Effective Runge-Kutta Optimizer Based on Adaptive Population Size and Search Step Size

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Computers, Materials & Continua 2023年第9期76卷 3443-3464页

作者： Ala kana Imtiaz Ahmad Department of Computer Engineering College of Engineering and PetroleumKuwait UniversityKuwait CityKuwait

A newly proposed competent population-based optimization algorithm called RUN,which uses the principle of slope variations calculated by applying the Runge Kutta method as the key search mechanism,has gained wider interest in solving optimization ***,in high-dimensional problems,the search capabilities,convergence speed,and runtime of RUN *** work aims at filling this gap by proposing an improved variant of the RUN algorithm called the *** size plays a vital role in both runtime efficiency and optimization effectiveness of metaheuristic *** the original RUN where population size is fixed throughout the search process,Adaptive-RUN automatically adjusts population size according to two population size adaptation techniques,which are linear staircase reduction and iterative halving,during the search process to achieve a good balance between exploration and exploitation *** addition,the proposed methodology employs an adaptive search step size technique to determine a better solution in the early stages of evolution to improve the solution quality,fitness,and convergence speed of the original ***-RUN performance is analyzed over 23 IEEE CEC-2017 benchmark functions for two cases,where the first one applies linear staircase reduction with adaptive search step size(LSRUN),and the second one applies iterative halving with adaptive search step size(HRUN),with the original *** promote green computing,the carbon footprint metric is included in the performance evaluation in addition to runtime and *** results based on the Friedman andWilcoxon tests revealed that Adaptive-RUN can produce high-quality solutions with lower runtime and carbon footprint values as compared to the original RUN and three recent ***,with its higher computation efficiency,Adaptive-RUN is a much more favorable choice as compared to RUN in time stringent applications.

关键词： Optimization Runge Kutta(RUN) metaheuristic algorithm exploration exploitation population size adaptation adaptive search step size

Hazard Mitigation Planning for Debris flow Based on Numerical Simulation Using kanako Simulator

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Journal of Mountain Science 2012年第4期9卷 529-537页

作者： LIU Jinfeng NAKATANI kana MIZUYAMA Takahisa Key Laboratory of Mountain Surface Process and Hazards Institute of Mountain Hazards and EnvironmentChineseAcademy of SciencesChengdu 610041China Department of Erosion Control Engineering Kyoto UniversityKyoto 6068502Japan

Debris flow often causes enormous loss to life and property,especially on alluvial *** structures such as retention check dams are essential to reduce the *** hazard mitigation evaluation and planning it is of significance to determine the location,size and type of dam and the effects of damage *** present a numerical simulation method using kanako simulator for hazard mitigation planning of debris flow disaster in Tanjutani Gully,Kyoto City,*** simulations were carried out for three situations:1) the simulations of erosion,deposition,hydrograph changing and inundation when there were no mitigation measures;2) the simulations of check dams in four locations(470 m,810 m,1,210 m and 1,610 m from the upstream end) to identify the best location;3) the simulations of check dams of three types(closed,slit and grid) to analyze their effects on sediment trapping and discharge *** on the simulations,it was concluded that two closed check dams(located at 470 m and 1,610 m from the upstream end) in the channel and a drainage channel on the alluvial fan can reduce the risk on the alluvial fan to an acceptable level.

关键词： Hazard mitigation planning Debrisflow Numerical simulation kanako Simulator

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特纳综合征染色体核型与自身免疫性甲状腺疾病的相关性分析

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临床儿科杂志 2024年第1期42卷 70-74页

作者：赵方圆陈永花王卡娜王春林浙江大学医学院附属第一医院儿科浙江杭州310003

目的探讨特纳综合征(TS)患儿不同染色体核型与自身免疫性甲状腺疾病(AITD)发生率及甲状腺功能的关系。方法回顾性收集93例特纳综合征患儿临床资料,分析AITD及甲状腺功能异常在各组染色体核型中的详细分布情况及二者之间的关联。结果93... 详细信息

目的探讨特纳综合征(TS)患儿不同染色体核型与自身免疫性甲状腺疾病(AITD)发生率及甲状腺功能的关系。方法回顾性收集93例特纳综合征患儿临床资料,分析AITD及甲状腺功能异常在各组染色体核型中的详细分布情况及二者之间的关联。结果93例特纳综合征患儿初诊时有21例(22.6%)合并AITD,其中17例甲状腺功能正常,1例亚临床甲状腺功能减退(甲减),1例临床甲减,2例甲状腺功能亢进(甲亢)。21例AITD患儿在中位时间间隔3年定期复查,以评估甲状腺功能状态随时间的变化,其中10例甲状腺功能正常,4例亚临床甲减,3例临床甲减,4例甲亢。AITD组按照核型被分为3个亚组(A 1亚组8例45,X染色体单体、A2亚组1例嵌合体型及A3组12例X染色体结构异常),随访结束时,各组的甲状腺功能异常的发生率随时间推移明显增加。结论特纳综合征患儿随着时间的推移甲状腺功能出现逐步恶化,并且AITD初诊时年龄越大,甲状腺功能恶化发生率越高。特纳综合征患者需要定期监测甲状腺功能并及时处置。

关键词： Turner综合征染色体核型甲状腺自身抗体儿童

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Case study of debris flow disaster scenario caused by torrential rain on Kiyomizu-dera, Kyoto, Japan - using Hyper kanaKO system

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Journal of Mountain Science 2016年第2期13卷 193-202页

作者： kana NAKATANI Satoshi HAYAMI Yoshifumi SATOFUKA Takahisa MIZUYAMA Department of Erosion Control Engineering Kyoto University Kyoto 606-8502 Japan CTI Engineering Co. Ltd. Osaka 541-0045 Japan Department of Civil Engineering Ritsumeikan University Shiga 606-8502 Japan National Graduate Institute for Policy Studies Tokyo106-8677 Japan

This paper presents debris-flow numerical simulations using the Hyper kanaKO system,developed by the *** system uses the debris flow simulator kanaKO 2D equipped with a graphical user interface(GUI);hence,a user can easily produce appropriate landform data for simulations using standard laser profiler data,and visualize the results using a *** kanaKO was applied to the streams around Kiyomizu-dera in Kyoto,***-dera is a famous temple in Japan which is visited by numerous tourists throughout the *** simulated a disaster scenario of debris flow caused by torrential *** set the hydrograph using rainfall intensity data,and set the landform data using information from the Geospatial Information Authority of Japan(GSI) and a digital elevation model(DEM).We evaluated different mesh sizes and also used a digital surface model(DSM) to consider the building *** simulation results showed that with small mesh size,the debris flowmoved through the roads,which seems realistic for a disaster *** buildings were considered,the flow direction changed,and a 1-m flow depth,which was deeper than in other cases,appeared in the flow *** may pose a dangerous situation for evacuations.

关键词： Debris flow Simulation GIS Hyper kanaKO system Torrential rain Kiyomizu-dera

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