期刊文献+
共找到1,547篇文章
< 1 2 78 >
每页显示 20 50 100
Development of feeding systems and strategies of supplementation to enhance rumen fermentation and ruminant production in the tropics 被引量:9
1
作者 Metha Wanapat Sungchhang Kang Sineenart Polyorach 《Journal of Animal Science and Biotechnology》 SCIE CAS 2013年第3期223-233,共11页
The availability of local feed resources in various seasons can contribute as essential sources of carbohydrate and protein which significantly impact rumen fermentation and the subsequent productivity of the ruminant... The availability of local feed resources in various seasons can contribute as essential sources of carbohydrate and protein which significantly impact rumen fermentation and the subsequent productivity of the ruminant.Recent developments,based on enriching protein in cassava chips,have yielded yeast fermented cassava chip protein(YEFECAP) providing up to 47.5% crude protein(CP),which can be used to replace soybean meal.The use of fodder trees has been developed through the process of pelleting;Leucaena leucocephala leaf pellets(LLP),mulberry leaf pellets(MUP) and mangosteen peel and/or garlic pellets,can be used as good sources of protein to supplement ruminant feeding.Apart from producing volatile fatty acids and microbial proteins,greenhouse gases such as methane are also produced in the rumen.Several methods have been used to reduce rumen methane.However,among many approaches,nutritional manipulation using feed formulation and feeding management,especially the use of plant extracts or plants containing secondary compounds(condensed tannins and saponins) and plant oils,has been reported.This approach could help todecrease rumen protozoa and methanogens and thus mitigate the production of methane.At present,more research concerning this burning issue-the role of livestock in global warming-warrants undertaking further research with regard to economic viability and practical feasibility. 展开更多
关键词 Feed resources feeding system METHANE Plant secondary compounds RUMINANTS
在线阅读 下载PDF
Consistency evaluation of the current distribution of short-circuit tests in AT feeding systems for high-speed railways 被引量:1
2
作者 Qing-an Ma Wei Liu 《Journal of Modern Transportation》 2018年第3期163-172,共10页
To improve the accuracy of fault location system, several short-circuit tests need to be conducted before being brought into service in autotransformer (AT) feeding systems for high-speed railways in China. However,... To improve the accuracy of fault location system, several short-circuit tests need to be conducted before being brought into service in autotransformer (AT) feeding systems for high-speed railways in China. However, no systematic algorithm yet exists to evaluate the consistency of the current distribution of short-circuit tests. A methodology is proposed in this paper to address this problem. Based on Kirchhoff’s current law and the generalized method of symmetrical components, the current deviations of the AT feeding systems are analysed and then normalized with the short-circuit current as they vary greatly with systems and short-circuit sites. It is also found that the short-circuit current varies with the calculation methods, and its unbiased standard deviation also reflects the consistency of the short-circuit test. The mean and maximum of the current deviations, as well as the unbiased standard deviation of the short-circuit current, show the consistency of the short-circuit test from different aspects,although the last two items are highly relevant. Therefore, a unified evaluation index is defined as the sum of the three items, and then applied in two case studies to test its performance. The results show that, the proposed index canclearly distinguish the consistency of the short-circuit tests and may be used to sort the short-circuit tests for fault location systems. Besides, some short-circuit tests may have very poor consistency indices, and thus are not applicable to the tuning of fault location systems. In the authors’ opinion, the determination of the threshold of the proposed index needs further investigation. 展开更多
关键词 Autotransformer feeding system Short-circuittest Consistency evaluation Kirchhoff’s current law Generalized method of symmetrical components
在线阅读 下载PDF
Adaptive fuzzy integral sliding mode pressure control for cutter feeding system of trench cutter
3
作者 田启岩 魏建华 +1 位作者 方锦辉 国凯 《Journal of Central South University》 SCIE EI CAS CSCD 2016年第12期3302-3311,共10页
A nonlinear pressure controller was presented to track desired feeding pressure for the cutter feeding system(CFS) of trench cutter(TC) in the presence of unknown external disturbances.The feeding pressure control of ... A nonlinear pressure controller was presented to track desired feeding pressure for the cutter feeding system(CFS) of trench cutter(TC) in the presence of unknown external disturbances.The feeding pressure control of CFS is subjected to unknown load characteristics of rock or soil; in addition,the geological condition is time-varying.Due to the complex load characteristics of rock or soil,the feeding velocity of TC is related to geological conditions.What is worse,its dynamic model is subjected to uncertainties and its function is unknown.To deal with the particular characteristics of CFS,a novel adaptive fuzzy integral sliding mode control(AFISMC) was designed for feeding pressure control of CFS,which combines the robust characteristics of an integral sliding mode controller and the adaptive adjusting characteristics of an adaptive fuzzy controller.The AFISMC feeding pressure controller is synthesized using the backstepping technique.The stability of the overall closed-loop system consisting of the adaptive fuzzy inference system,integral sliding mode controller and the cutter feeding system is proved using Lyapunov theory.Experiments are conducted on a TC test bench with the AFISMC under different operating conditions.The experimental results demonstrate that the proposed AFISMC feeding pressure controller for CFS gives a superior and robust pressure tracking performance with maximum pressure tracking error within ?0.3 MPa. 展开更多
关键词 electro-hydraulic system cutter feeding system feeding pressure control adaptive fuzzy integral sliding mode control
在线阅读 下载PDF
Lower fuel consumption model and air-flow segregation feeding system for sintering
4
作者 江源 黄柱成 +1 位作者 许斌 姜涛 《Journal of Central South University》 SCIE EI CAS 2011年第6期1917-1923,共7页
In order to utilize the spontaneous accumulation of heat (SAH) reasonably and obtain the high quality sinter with low energy consumption, a lower fuel consumption modeling based on raw materials of a certain steel wor... In order to utilize the spontaneous accumulation of heat (SAH) reasonably and obtain the high quality sinter with low energy consumption, a lower fuel consumption modeling based on raw materials of a certain steel works was built. An air-flow segregation feeding (ASF) experimental equipment was designed to simulate strand feeding process and calculate the lower fuel consumption quantity. Compared with baseline test, the ASF experimental equipment was adopted. The results of sinter pot tests show that the solid fuel consumption is lower than that in baseline test, which is decreased by 5.8%. Meanwhile, other sinter indexes, such as pan yeild, tumbler strength and strand productivity are improved. The mineralogical examination indicates that the mineral compositions and micostructures are improved in sinter. 展开更多
关键词 fuel consumption spontaneous accumulation of heat air-flow segregation feeding SINTER
在线阅读 下载PDF
Research of novel oscillating wire feeding system using the AC servo motor
5
作者 杨世彦 于志 刘喆 《China Welding》 EI CAS 2003年第2期112-115,共4页
With the background of the control of additional mechanical force droplet transfer in MIG/MAG welding, regarding the AC servo motor as core, a novel oscillating wire feeding system has been developed with excellent pe... With the background of the control of additional mechanical force droplet transfer in MIG/MAG welding, regarding the AC servo motor as core, a novel oscillating wire feeding system has been developed with excellent performances of control and dynamic acceleration which is tested. System constitution and operation principle are introduced in this paper. Influences of parameters on dynamic acceleration performance are analyzed and discussed emphatically, such as oscillating frequency, oscillating amplitude and draw-back speed. Experimental result indicates that according to the technique of welding control, the novel wire feeding system responds rapidly to various kinds of control orders of wire feeding and draw-back, and realizes flexible control of welding wire axial movement, including dynamic shifting,oscillating and so on. 展开更多
关键词 servo motor oscillating wire feeding mechanical inertial force droplet transfer
在线阅读 下载PDF
Hydraulic simulation of the feeding system in the strip casting process
6
作者 REN Sanbing DU Feng +3 位作者 ZHAO Shunli FAN Junfei FANG Yuan ZHANG Jieyu 《Baosteel Technical Research》 CAS 2009年第1期22-26,共5页
A 1:1 water model of a twin-roll strip caster was set up based on the Froude number(Fr) and Reynolds number (Re) similarity criteria. Fluctuation and the mixing effect in the molten pool of twin-roll strip castin... A 1:1 water model of a twin-roll strip caster was set up based on the Froude number(Fr) and Reynolds number (Re) similarity criteria. Fluctuation and the mixing effect in the molten pool of twin-roll strip casting process were analyzed through hydraulic simulation. The height of the fluctuation of the liquid pool surface and the residence time were measured by DJ800 multifunctional monitor under different process conditions. The results show that the casting velocity, the insertion depth and the pool level have a great effect on the fluctuation. 展开更多
关键词 strip casting side dam feeding device casting velocity pool level
在线阅读 下载PDF
Productive Response and Reproductive Performance of Dairy Cows Subjected to Different Feeding Systems
7
作者 Eloy Eduardo Salado Martín Guillermo Maciel +2 位作者 Gustavo Bretschneider Alejandra Cuatrin Gerardo Antonio Gagliostro 《Open Journal of Animal Sciences》 2020年第1期10-32,共23页
Fifty Holstein cows (2.6 ± 1.0 lactations) in early lactation (52.6 ± 16.4 days in milk) calved in autumn and producing 34.3 (±4.4) kg milk per cow·day-1 were randomly assigned for 27 weeks to one ... Fifty Holstein cows (2.6 ± 1.0 lactations) in early lactation (52.6 ± 16.4 days in milk) calved in autumn and producing 34.3 (±4.4) kg milk per cow·day-1 were randomly assigned for 27 weeks to one of two treatments (feeding systems) in 10 groups (pens) of 5 animals each (5 groups/treatment). The confined treatment was a total mixed ration (TMR_100) whereas the supplemented grazing system was defined by a partially mixed ration (PMR_75) with 75% TMR and 25% oat pasture (Avena sativa L.) during the autum-winter (Period I) and alfalfa pasture (Medicago sativa L.) plus concentrate (7.0 kg per cow·day-1) (P + C) during the next spring (Period II). Milk production was daily and individually recorded throughout the trial while the chemical composition of milk was measured on individual samples every 2 weeks. Live weight (LW) and body condition score (BCS) using a scale of 1 to 5 were recorded every 3 weeks after the morning milking. Simultaneously, blood samples were taken for determinations of glucose, urea, non-esterified fatty acids (NEFA), insulin, somatotrophin (GH) and somatomedin C (IGF-I). Total DM intake was measured using the difference method four times per repetition in the months of July, August, September and October. The experimental herd was inseminated at fixed time at the start of the service (May-July) and on the return with estrus detection. The diagnosis of pregnancy was made by transrectal ultrasonography at 30 and 60 days after the start of the service. The productive data were analyzed according to a model with repeated observations in time adjusted by covariate with 2 periods and using the animal as the experimental unit. Data of DM intake were analyzed using ANOVA for 2 treatments with 5 repetitions. Cows from the TMR_100 group produced more milk (kg&#183;cow-1&#183;day-1) during Period I (33.7 vs. 32.3) and Period II (28.8 vs. 27.8) (P &#183;cow-1&#183;day-1) in Periods I (1.33 vs. 1.24) and II (1.10 vs. 0.92) and for milk protein (1.19 vs. 1.13 and 0.99 vs. 0.93). The lower energy intake of grazing cows (45.0 vs. 43.1 and 40.9 vs. 38.9 Mcal per?cow·day-1 for TMR_100 vs. PMR_75 and TMR_100 vs. P + C) coupled to the extra energy cost associated with grazing activity would explain the difference in milk production. Milk protein content (%) resulted higher (P kg&#183;cow-1&#183;day-1) in the cows of the TMR_100 group in both periods (0.69 vs. 0.34 and 0.49 vs. -0.22) was consistent with the increase in the plasmatic levels of glucose and IGF-I and the reduction in the circulating levels of GH, but not with the lack of increases in plasma insulin concentration or decreases in circulating levels of NEFA, parameters that were not affected by treatments. Despite the positive effects of TMR_100 on parameters linked to energy balance, no significant differences were detected in any of the reproductive parameters evaluated and the final rate of pregnancy was 80.0 and 91.3% for the confined and grazing system with supplementation respectively. Free milk liters over feeding costs were higher in the grazing system with supplementation compared to the confined system (18.5 vs. 15.5 l, respectively). The results indicate that the grazing system with supplementation can be economically competitive compared to the confined system of milk production. 展开更多
关键词 MILK Yield REPRODUCTION DAIRY COW feeding systems
在线阅读 下载PDF
Analysis on the High-end Feeding System and the Application Scenarios on the Lake Sheep Barn Feeding Scale Breeding Technology Research
8
作者 Jie Xiao Panfeng sun 《International Journal of Technology Management》 2016年第7期32-34,共3页
In this paper, we conduct research on the high-end feeding system and the application scenarios on the lake sheep barn feeding scale breeding technology research. Sheep farm reproduction for the main places, so make s... In this paper, we conduct research on the high-end feeding system and the application scenarios on the lake sheep barn feeding scale breeding technology research. Sheep farm reproduction for the main places, so make sure sheep pen set reasonable. At the same time, we should reduce/avoid adverse effects caused by the surroundings of the flock, and conducive to the sheep’s normal growth and reproduction.Goats engineering technology mainly includes process of design and construction, building facilities, environmental control, waste treatment technology, sheep product processing technology, such as sheep breeding engineering technology is connected to the biological technology. This paper integrates the related theories to propose the countermeasures that will be meaningful. 展开更多
关键词 High-end feeding Application Scenarios Lake Sheep Scale Breeding Technology.
在线阅读 下载PDF
Design Scheme of New Type Shell Raising and Feeding System of Medium-large Caliber Naval Gun
9
作者 SONG Hong-xia,HU Sheng-hai,LUO A-niCollege of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001 ,China 《哈尔滨工程大学学报(英文版)》 2002年第2期55-61,共7页
The medium -large caliber naval gun is still playing an important role in modern war. The development of highly automatic Shell Raising and Feeding System (SRFS) in the world has been briefly outlined. Several typical... The medium -large caliber naval gun is still playing an important role in modern war. The development of highly automatic Shell Raising and Feeding System (SRFS) in the world has been briefly outlined. Several typical SRFS of medium-large caliber naval guns have been analyzed. A re-design of the system is introduced, in which systematic design method has been used to demonstrate its feasibility. The design goal of the system is to realize rapid shell feeding, with application to many types of shells, quick change of shell types , accurate and reliable feeding operation, simple mechanical structure and easy realization of shell withdrawing. 展开更多
关键词 the medium-large CALIBER naval gun SHELL RAISING and feeding system systematic design method.
在线阅读 下载PDF
Neuronal Regulation of Feeding and Energy Metabolism: A Focus on the Hypothalamus and Brainstem 被引量:1
10
作者 Jing Chen Meiting Cai Cheng Zhan 《Neuroscience Bulletin》 2025年第4期665-675,共11页
In the face of constantly changing environments,the central nervous system(CNS)rapidly and accurately calculates the body's needs,regulates feeding behavior,and maintains energy homeostasis.The arcuate nucleus of ... In the face of constantly changing environments,the central nervous system(CNS)rapidly and accurately calculates the body's needs,regulates feeding behavior,and maintains energy homeostasis.The arcuate nucleus of the hypothalamus(ARC)plays a key role in this process,serv-ing as a critical brain region for detecting nutrition-related hormones and regulating appetite and energy homeostasis.Agouti-related protein(AgRP)/neuropeptide Y(NPY)neu-rons in the ARC are core elements that interact with other brain regions through a complex appetite-regulating network to comprehensively control energy homeostasis.In this review,we explore the discovery and research progress of AgRP neurons in regulating feeding and energy metabolism.In addition,recent advances in terms of feeding behavior and energy homeostasis,along with the redundant neural mecha-nisms involved in energy metabolism,are discussed.Finally,the challenges and opportunities in the field of neural regula-tion of feeding and energy metabolism are briefly discussed. 展开更多
关键词 HYPOTHALAMUS AgRP neurons feeding behavior Energy homeostasis BRAINSTEM NTS VLM Catecholaminergic neurons NPY neurons
原文传递
Optimizing nutritional support in upper gastrointestinal surgery: A comprehensive review of feeding jejunostomy techniques and outcomes
11
作者 Ioana Alexandra Prisacariu Konstantinos Eleftherios Koumarelas +2 位作者 Konstantinos Argyriou Alexandros Charalabopoulos Grigorios Christodoulidis 《World Journal of Gastrointestinal Surgery》 2025年第10期66-80,共15页
This minireview synthesizes literature on the use of feeding jejunostomy tubes(FJTs)in the postoperative management of gastroesophageal cancer patients.Gastrectomy and esophagectomy remain the primary curative treatme... This minireview synthesizes literature on the use of feeding jejunostomy tubes(FJTs)in the postoperative management of gastroesophageal cancer patients.Gastrectomy and esophagectomy remain the primary curative treatments for gastric and esophageal cancers,respectively,but are frequently accompanied by significant postoperative malnutrition,which adversely impacts surgical and oncological outcomes as well as patients’quality of life.To address this,the European Society for Clinical Nutrition and Surgery and the National Comprehensive Cancer Network recommend early enteral feeding through FJT placement following major surgery.While previous studies have demonstrated that FJT is an effective and reliable route for nutritional support,its placement is invasive and carries associated risks.Consequently,many clinicians opt for less invasive alternatives such as total parenteral nutrition or nasogastric tube feeding,although these approaches yield variable results.This review explores the benefits and potential complications of FJT placement,identifies variability in clinical adoption and the absence of standardized protocols,and highlights areas for future research to optimize patient care in this challenging context. 展开更多
关键词 NUTRITION Nutritional support Cancer feeding jejunostomy feeding jejunostomy tube
暂未订购
Microplastic Ingestion by Fish with Different Feeding Habits from Different Habitats in a Typical Semi-Enclosed Haizhou Bay
12
作者 SUI Yanming ZHANG Yingying +8 位作者 CHEN Shihao SHI Yangyang ZOU Jiaxin MOHAMED Mohsen QIN Kunyun YU Yebing LIU Zhiquan ZHENG Liang LV Linlan 《Journal of Ocean University of China》 2025年第2期343-354,共12页
Microplastic(MP)pollution has spread from the mainland to the ocean.However,Haizhou Bay,which is one of the important land-ocean transition zones,has been reported relatively little about the enrichment of MPs.To prov... Microplastic(MP)pollution has spread from the mainland to the ocean.However,Haizhou Bay,which is one of the important land-ocean transition zones,has been reported relatively little about the enrichment of MPs.To provide fundamental data for MP pollution in Haizhou Bay,we studied the occurrence of microplastics in the intestines of 8 species of fish with different habits and feeding modes.The fish intestines were digested with a 10%KOH solution,and MPs are separated with a glass fiber filter.Then,the size,shape,color,and composition of the MPs were analyzed using a stereomicroscope and Fourier transform infrared spectrometer.The results showed the abundance of MP intake ranged from 0.02 items g^(-1) to 0.16 items g^(-1) and the detection rate of MPs ranged from 53.33% to 80% across different fish species.The MP intake in benthic fish and omnivorous fish was significantly higher than that of pelagic fish and predatory fish.Smaller MPs(<0.25 mm)were the dominant types and accounted for 62.50% of the total.The fiber was the prevailing shape of MPs,and the black MPs were the most common,followed by red and yellow ones.Polyethylene terephthalate(PET),polyamide(PA),and polystyrene(PS)were the main components of MPs,accounting for 34.9%,29.9%,and 16.4%,respectively.According to the composition analysis of MPs,the main sources of MPs in fish of Haizhou Bay were attributed to marine aquaculture and port construction.The results are helpful for our better understanding of the status of MP pollution in this area,and further aid in the development of the pointed measures to mitigate and prevent the MP pollution in this ecologically important area. 展开更多
关键词 microplastics semi-enclosed bay feeding habits feeding modes
在线阅读 下载PDF
The Influence of the Collective Effect of Tooth–tooth Interaction on the Feeding Efficiency of Gastropods:A Biomimetic Approach
13
作者 Wencke Krings Tamina Riesel +3 位作者 Thomas M.Kaiser Alexander Daasch Ellen Schulz-Kornas Stanislav N.Gorb 《Journal of Bionic Engineering》 2025年第3期1364-1380,共17页
The radula is a crucial adaptation for food-processing in molluscs.A deeper understanding of the interaction between the radula and the preferred food is lacking,complicating the inference of the precise ecological ro... The radula is a crucial adaptation for food-processing in molluscs.A deeper understanding of the interaction between the radula and the preferred food is lacking,complicating the inference of the precise ecological roles of radular structures.This study presents the first experimental set-up that allows to study the influence of the radular morphology,specifically the degree of tooth-tooth interlocking(so-called collective effect),on the feeding efficiency.For this purpose,physical 3D models of the teeth were designed using CAD software and 3D printing technique.The feeding efficiencies with models of different degree of interlocking were determined by tensile tests,pulling the models trough agar gels with different viscosities.The forces generated by the models and the masses of the removed gel fragments were determined.We found,that radular models with a high degree of tooth–tooth interlocking performed best as they were able to remove most agar.We additionally broke the teeth and determined,that the teeth with the highest degree of interlocking could resist to highest force.Overall,the study highlights the complex interplay between radular morphology and its ecological function,suggesting that even minor morphological alterations can significantly impact the efficiency and effectiveness of food gathering.Understanding these interactions cannot only shed light on the ecological adaptations of molluscs,but provide further insights into development of more effective grinding,scraping,and cleaning technical devices. 展开更多
关键词 MOLLUSCA feeding Mechanical behaviour Breaking stress Tensile test 3D printing
在线阅读 下载PDF
Feeding tube self-management experience of patients at home after discharge following esophageal cancer surgery
14
作者 Guo-Li Miao Qing-Jun You +3 位作者 Xiao-Yan Feng Jiang-Hui Chu Jin-You Li Ping Cai 《World Journal of Gastrointestinal Surgery》 2025年第2期207-216,共10页
BACKGROUND Esophageal cancer(EC)is an aggressive malignancy with low survival(10%-30%).Nutritional problems are present throughout the perioperative period and are key to prognosis.Home enteral nutrition appears to im... BACKGROUND Esophageal cancer(EC)is an aggressive malignancy with low survival(10%-30%).Nutritional problems are present throughout the perioperative period and are key to prognosis.Home enteral nutrition appears to improve the nutritional status of patients with EC.Few studies have addressed the experience of patients administering their own nutritional fluids and managing their own feeding tubes at home.The aim of this study was to explore the real-life experience of self-management of feeding tubes in patients at home after EC surgery in the first 3 months after discharge following surgery.AIM To explore feeding tube self-management experience of patients at home 3 months after discharge following EC surgery.METHODS Face-to-face semi-structured interviews were conducted with 18 patients using a feeding tube at home after EC surgery.Thematic analysis of the recordings identified themes related to feeding tube self-management.RESULTS Patients expressed similar feelings about their tube management experiences concerning three contextualized themes:Self-management dilemmas,distressing experiences,and self-management facilitators.CONCLUSION There are many dilemmas and problems in self-managing feeding tubes in postoperative homebound patients with EC.Clinical staff should provide guidance to promote a positive change in self-management behavior. 展开更多
关键词 Esophageal cancer Home care nursing feeding tubes SELF-MANAGEMENT Qualitative research
暂未订购
Multi-Channel Electrolyte Supply for Electrochemical Trepanning of Blisks Using Rotational Feeding Combined with Shift Feeding
15
作者 Gaopan Lei Dong Zhu +3 位作者 Mingzhu Ren Erhao Jiao Yongquan Xie Mingfu Li 《Chinese Journal of Mechanical Engineering》 2025年第2期440-458,共19页
Rotational feeding combined with shift feeding electrochemical trepanning(RF-SF ECTr)is an effective method for machining aeroengine blisks.However,given the variable relative motion of the electrodes and the complex ... Rotational feeding combined with shift feeding electrochemical trepanning(RF-SF ECTr)is an effective method for machining aeroengine blisks.However,given the variable relative motion of the electrodes and the complex flow channels around the bending and twisting blades,the accessibility and uniformity of the flow field are poor in blisk RF-SF ECTr using the traditional electrolyte supply(TES)mode,resulting in poor machining stability and low machining efficiency.To improve the distribution of the flow field,a new multi-channel electrolyte supply(MCES)mode is proposed for blisk RF-SF ECTr,in which the position and volume of the electrolyte supply are controlled effectively by setting multiple inlet channels in the liquid inlet area.A flow-field simulation comparison between TES and MCES shows that better accessibility and uniformity of the flow-field distribution are achieved under MCES.To clarify further the flow-field distribution characteristics under RF-SF ECTr,a series of flow-field simulations was conducted at different machining depths.Based on the obtained dynamic change law for the flow field,to enhance further its uniformity and accessibility,a global coverage strategy for the electrolyte supply and a flow-field structure optimization method for MCES are proposed,which involve optimizing the number,diameter,and location of the inlet channels.After many simulations,the optimal MCES structure was achieved whereby the electrolyte covers all positions effectively in the processing area.To verify the proposed method as effective and correct,a series of RF-SF ECTr experiments was carried out.Under the optimized MCES mode,the feeding rate was increased from 0.8 mm/min with the TES mode to 2.0 mm/min,and the processing stability and efficiency were improved significantly.The methods presented here offer an effective guide for flow-field optimization when machining other components with complex spatial structures. 展开更多
关键词 Electrochemical trepanning Blisk Rotational feeding Flow field optimization Multi-channel electrolyte supply
在线阅读 下载PDF
Association between postoperative feeding patterns and gastrointestinal function reconstruction after congenital intestinal atresia in neonates
16
作者 Hui-Ling Kang Yue-Zhi Zhao 《World Journal of Gastrointestinal Surgery》 2025年第4期300-308,共9页
BACKGROUND Congenital intestinal atresia(CIA)is a common intestinal malformation in the neonatal period,and surgery is currently the main treatment method.The choice of postoperative feeding is crucial for the recover... BACKGROUND Congenital intestinal atresia(CIA)is a common intestinal malformation in the neonatal period,and surgery is currently the main treatment method.The choice of postoperative feeding is crucial for the recovery of gastrointestinal function in children.AIM To compare and analyze the effects of different postoperative feeding methods on gastrointestinal function reconstruction in newborns with CIA.METHODS Twenty-six children diagnosed with neonatal CIA,treated with minimally invasive surgery at Shijiazhuang Maternal and Child Health Hospital between January 2021 and May 2024,were selected for this single-center prospective randomized controlled study.They were divided into two groups using envelope randomization:Enteral nutrition(EN)group(n=13)and parenteral nutrition(PN)group(n=13).Baseline and clinical characteristics were collected,and recovery time of bowel sounds and time to first defecation were used as evaluation indices for gastrointestinal functional reconstruction.Differences between the groups were analyzed using t-test,χ2 test,and Fisher’s exact test.Spearman’s correlation tests and linear regression models were employed to analyze factors influencing time to first defecation.RESULTS The time to bowel sound recovery(51.54 vs 65.85,P=0.013)and first defecation(58.15 vs 76.62,P<0.001)was shorter in the EN group compared to the PN group.Clinical improvements in the EN group,including discharge weight(P=0.044),hospital stay(P=0.027),white blood cell count(P=0.023),albumin content(P=0.013),and direct bilirubin content(P=0.018),were also better than those in the PN group.No substantial differences in postoperative complications were found between the groups.Correlation analysis indicated that abdominal infection and operation time may relate to time to first defecation.Linear regression analysis demonstrated a considerable association between EN feeding and shorter time to first defecation.Abdominal infection and an operation time>2 hours may be risk factors for prolonged time to first defecation.CONCLUSION EN substantially promotes the recovery of gastrointestinal function after CIA in neonates and can improve clinical outcomes in children.Future research should explore optimal EN practices to enhance clinical application and child health. 展开更多
关键词 Congenital intestinal atresia Enteral nutrition Gastrointestinal function reconstruction Neonatal postoperative feeding Surgical prognosis
暂未订购
Immobilization of phosphorus in sediment-water system by hydrous iron oxide and hydrous iron oxide/calcite mixture under feed input condition
17
作者 Lingui Li Yanhui Zhan Jianwei Lin 《Journal of Environmental Sciences》 2025年第12期476-504,共29页
The efficiency and mechanism of hydrous iron oxide(HFO)and HFO/calcite mixture to inactivate the phosphorus in the overlying water(OW)/sediment system under the feed adding condition were explored,and the effect of HF... The efficiency and mechanism of hydrous iron oxide(HFO)and HFO/calcite mixture to inactivate the phosphorus in the overlying water(OW)/sediment system under the feed adding condition were explored,and the effect of HFO and HFO/calcite mixture addition on the diversity,composition and function of bacterial communities in the sediment was examined.HFO and HFO/calcite mixture direct addition can effectively lower the concentration of soluble reactive phosphorus(RSP)and diffusion gradient in thin film-unstable phosphorus(PD GT)in OW and inactivate the P DGTin the upper sediment.The elimination efficiencies of RSP by the direct HFO and HFO/calcite mixture addition were 48.9%-97.0%and 42.4%-95.4%,respectively.The alteration in the addition mode from the one-time to multiple direct addition was beneficial to the immobilization of RSP and PD GTin OW and P DGTin the upper sediment by HFO and HFO/calcite mixture under the feed input condition in the long run.Permeable fabric wrapping reduced the inactivation efficiency of RSP in OW by HFO and HFO/calcite mixture,but it made the recycling of these materials possible.Most of P immobilized by HFO and HFO/calcite mixture was relatively or very stable.After the HFO and HFO/calcite mixture addition,the composition of bacterial communities in the surface sediment changed.However,the bacterial communities in the amended sediments still can perform good ecological function.Our findings suggest that HFO and HFO/calcite mixture are promising phosphorus-immobilization materials for the inactivation of RSP and PD GTin OW and PD GTin the upper sediment under the feed inputting condition. 展开更多
关键词 Hydrous iron oxide CALCITE SEDIMENT FEED PHOSPHORUS IMMOBILIZATION
原文传递
Clinical benefits and controversies of jejunostomy feeding in patients undergoing gastrectomy for gastric cancer
18
作者 Martino Munini Margot Fodor +1 位作者 Alessio Corradi Antonio Frena 《World Journal of Gastrointestinal Surgery》 2025年第3期422-426,共5页
Globally,gastric cancer ranks as the fifth most common malignancy and the third leading cause of cancer-related mortality.Gastrectomy combined with periop-erative chemotherapy is currently the standard of care in loca... Globally,gastric cancer ranks as the fifth most common malignancy and the third leading cause of cancer-related mortality.Gastrectomy combined with periop-erative chemotherapy is currently the standard of care in locally advanced stages,but the completion rate of multimodal approach is influenced also by patient related factors.Malnutrition is a well-known risk factor associated with poor oncological outcomes.Its perioperative supplementation could lead to an im-provement of the nutritional status.This article reviews and comments the retro-spective study conducted by Jaquet et al,which evaluates the impact of enteral nutrition by jejunostomy feeding in patients undergoing gastrectomy for cancer.The authors included 172 patients,35%of whom received jejunostomy.Patients with optimized biological nutritional parameters(body mass index,albumin,prealbumin)showed reduced major complications(>III),according to the Dindo-Clavien classification,0(0%)vs 8(4.7%)(P=0.05).In the era of multimodal treatment,optimization of nutritional and performance status is integral part of the therapeutic strategy. 展开更多
关键词 Gastric cancer feeding jejunostomy MALNUTRITION
暂未订购
Important role and benefits of Azolla plants in the management of agroecosystem services, biodiversity, and sustainable rice production in Southeast Asia
19
作者 Siriyaporn Chanapanchai Wahdan Fitriya +1 位作者 Ida Bagus Made Artadana Kanyaratt Supaibulwatana 《Journal of Integrative Agriculture》 2025年第8期3004-3023,共20页
Global warming and climate change have made food production through conventional agriculture inefficient, and their effects on livestock and crop cultivation are leading to disruptions in the food supply. The troubles... Global warming and climate change have made food production through conventional agriculture inefficient, and their effects on livestock and crop cultivation are leading to disruptions in the food supply. The troubles are severe in regions suffering from improper land management and unsustainable practices. The Bio-CircularGreen(BCG) economic model, designed to reduce and recycle resources by using environmentally friendly procedures, has been developed. The Azolla plant represents an interesting model for BCG and for enhancing community networks in Southeast Asia(SEA) because it provides multipurpose materials. Azolla can be used for various applications in agriculture such as biofertilizer and animal feed. However, our understanding and utilization of Azolla are limited. Moreover, collaboration among farmers is insufficient to maximize the benefits of Azolla. In this study, we provide a comprehensive review of the role of Azolla in agriculture. We review the main properties of Azolla as biofertilizers, especially regarding rice production and the interaction with cyanobacteria. For livestock, we discuss procedures to use Azolla in animal feed and evaluate the ingredients of the meal. In addition, we discuss product qualities from livestock treated with Azolla in the diet. This review also describes Azolla-based farming, which is designed for efficient land use and promotes nutrient cycling.Hence, we show that the Azolla plant is one of the key factors for farm-based agroecosystem services which can drive sustainable bioresource management in SEA. Moreover, we also propose the potential development of Azolla to improve its properties as a biofertilizer, a functional feed for animals and humans, and a feedstock for bio-oil production. 展开更多
关键词 AZOLLA rice nitrogen biofertilizer livestock feed sustainable farming agroecosystem services
在线阅读 下载PDF
Central nervous system regulation of food intake and energy expenditure:role of galanin-mediated feeding behavior 被引量:2
20
作者 方彭华 郁梅 +3 位作者 马银屏 李健 隋玉梅 史明仪 《Neuroscience Bulletin》 SCIE CAS CSCD 2011年第6期407-412,共6页
Galanin is a neuropeptide widely expressed in the brain.It is implicated in energy expenditure,feeding,and the regulation of body weight.Numerous studies have revealed that galanin regulates food intake via galanin re... Galanin is a neuropeptide widely expressed in the brain.It is implicated in energy expenditure,feeding,and the regulation of body weight.Numerous studies have revealed that galanin regulates food intake via galanin receptors,5-HT1A receptor and adrenergic α-2 receptor.In this review,we summarize recent findings that reveal the essential role of galanin in increasing food intake as well as body weight and that identify the individual galanin receptor subtypes involved in the brain's modulation of food intake and energy expenditure,to provide a theoretical basis for further studies of different aspects of galanin action. 展开更多
关键词 GALANIN RECEPTOR feeding behavior central nervous system
原文传递
上一页 1 2 78 下一页 到第
使用帮助 返回顶部