Habitation (Elmsford, N.Y.)最新文献_第4页

Workshop on future directions for plant research at NASA: a report. NASA植物研究未来方向研讨会:报告。

Habitation (Elmsford, N.Y.) Pub Date : 2004-01-01

引用次数: 0

Online model-based diagnosis to support autonomous operation of an advanced life support system. 基于在线模型的诊断，支持先进生命维持系统的自主运行。

Habitation (Elmsford, N.Y.) Pub Date : 2004-01-01 DOI: 10.3727/154296604774808892

Gautam Biswas, Eric-Jan Manders, John Ramirez, Nagabhusan Mahadevan, Sherif Abdelwahed

引用次数: 27

Evidence of pathogenic microbes in the International Space Station drinking water: reason for concern? 国际空间站饮用水中存在致病微生物的证据:值得关注的理由?

Habitation (Elmsford, N.Y.) Pub Date : 2004-01-01 DOI: 10.3727/154296604774808883

Myron T La Duc, Randall Sumner, Duane Pierson, Parth Venkat, Kasthuri Venkateswaran

{"title":"Evidence of pathogenic microbes in the International Space Station drinking water: reason for concern?","authors":"Myron T La Duc, Randall Sumner, Duane Pierson, Parth Venkat, Kasthuri Venkateswaran","doi":"10.3727/154296604774808883","DOIUrl":"https://doi.org/10.3727/154296604774808883","url":null,"abstract":"Molecular analyses were carried out on four preflight and six postflight International Space Station (ISS)-associated potable water samples at various stages of purification, storage, and transport, to ascertain their associated microbial diversities and overall microbial burdens. Following DNA extraction, PCR amplification, and molecular cloning procedures, rDNA sequences closely related to pathogenic species of Acidovorax, Afipia, Brevundimonas, Propionibacterium, Serratia, and others were recovered in varying abundance. Retrieval of sequences arising from the iodine (biocide)-reducing Delftia acidovorans in postflight waters is also of concern. Total microbial burdens of ISS potable waters were derived from data generated by an ATP-based enumeration procedure, with results ranging from 0 to 4.9 x 10(4) cells/ml. Regardless of innate biases in sample collection and analysis, such circumstantial evidence for the presence of viable, intact pathogenic cells should not be taken lightly. Implementation of new cultivation approaches and/or viability-based assays are requisite to confirm such an occurrence.","PeriodicalId":86963,"journal":{"name":"Habitation (Elmsford, N.Y.)","volume":"10 1","pages":"39-48"},"PeriodicalIF":0.0,"publicationDate":"2004-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3727/154296604774808883","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25099143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 33

Bioavailability of iron from spinach using an in vitro/human Caco-2 cell bioassay model. 体外/人Caco-2细胞生物测定模型研究菠菜铁的生物利用度

Habitation (Elmsford, N.Y.) Pub Date : 2004-01-01 DOI: 10.3727/154296604774808900

Corinne J Rutzke, Raymond P Glahn, Michael A Rutzke, Ross M Welch, Robert W Langhans, Louis D Albright, Gerald F Combs, Raymond M Wheeler

{"title":"Bioavailability of iron from spinach using an in vitro/human Caco-2 cell bioassay model.","authors":"Corinne J Rutzke, Raymond P Glahn, Michael A Rutzke, Ross M Welch, Robert W Langhans, Louis D Albright, Gerald F Combs, Raymond M Wheeler","doi":"10.3727/154296604774808900","DOIUrl":"https://doi.org/10.3727/154296604774808900","url":null,"abstract":"Spinach (Spinacia oleracea) cv Whitney was tested for iron bioavailabilty using an in vitro human intestinal cell culture ferritin bioassay technique previously developed. Spinach was cultured in a growth chamber for 33 days, harvested, and freeze-dried. Total iron in the samples was an average of 71 micrograms/g dry weight. Spinach was digested in vitro (pepsin and 0.1 M HCl followed by pancreatin and 0.1 M NaHCO3) with and without the addition of supplemental ascorbic acid. Caco-2 cell cultures were used to determine iron bioavailability from the spinach mixtures. Production of the iron-binding protein ferritin in the Caco-2 cells showed the supplemental ascorbic acid doubled bioavailability of iron from spinach. The data show fresh spinach is a poor source of iron, and emphasize the importance of evaluation of whole meals rather than single food items. The data support the usefulness of the in vitro/Caco-2 cell ferritin bioassay model for prescreening of space flight diets for bioavailable iron.","PeriodicalId":86963,"journal":{"name":"Habitation (Elmsford, N.Y.)","volume":"10 1","pages":"7-14"},"PeriodicalIF":0.0,"publicationDate":"2004-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3727/154296604774808900","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25271288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Water cycle and its management for plant habitats at reduced pressures. 减压条件下植物生境的水循环及其管理。

Habitation (Elmsford, N.Y.) Pub Date : 2004-01-01 DOI: 10.3727/154296604774808865

Vadim Y Rygalov, Philip A Fowler, Raymond M Wheeler, Ray A Bucklin

{"title":"Water cycle and its management for plant habitats at reduced pressures.","authors":"Vadim Y Rygalov, Philip A Fowler, Raymond M Wheeler, Ray A Bucklin","doi":"10.3727/154296604774808865","DOIUrl":"https://doi.org/10.3727/154296604774808865","url":null,"abstract":"Experimental and mathematical models were developed for describing and testing temperature and humidity parameters for plant production in bioregenerative life support systems. A factor was included for analyzing systems operating at low (10-101.3 kPa) pressure to reduce gas leakage and structural mass (e.g., inflatable greenhouses for space application). The expected close relationship between temperature and relative humidity was observed, along with the importance of heat exchanger coil temperature and air circulation rate. The presence of plants in closed habitats results in increased water flux through the system. Changes in pressure affect gas diffusion rates and surface boundary layers, and change convective transfer capabilities and water evaporation rates. A consistent observation from studies with plants at reduced pressures is increased evapotranspiration rates, even at constant vapor pressure deficits. This suggests that plant water status is a critical factor for managing low-pressure production systems. The approach suggested should help space mission planners design artificial environments in closed habitats.","PeriodicalId":86963,"journal":{"name":"Habitation (Elmsford, N.Y.)","volume":"10 1","pages":"49-59"},"PeriodicalIF":0.0,"publicationDate":"2004-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3727/154296604774808865","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25099144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

Effects of drying on nitrification activity in zeoponic medium used for long-term space missions. 干燥对用于长期太空任务的zeoponic培养基硝化活性的影响。

Habitation (Elmsford, N.Y.) Pub Date : 2004-01-01 DOI: 10.3727/154296604774808874

R L McGilloway, R W Weaver

引用次数: 2

Development of a root feeding system based on a fiber ion-exchange substrate for space plant growth chamber "Vitacycle". 基于纤维离子交换基质的空间植物生长室“Vitacycle”取根系统的研制。

Habitation (Elmsford, N.Y.) Pub Date : 2003-01-01 DOI: 10.3727/1542966034605261

Yu A Berkovich, N M Krivobok, S M Krivobok, V V Matusevich, V S Soldatov

{"title":"Development of a root feeding system based on a fiber ion-exchange substrate for space plant growth chamber \"Vitacycle\".","authors":"Yu A Berkovich, N M Krivobok, S M Krivobok, V V Matusevich, V S Soldatov","doi":"10.3727/1542966034605261","DOIUrl":"https://doi.org/10.3727/1542966034605261","url":null,"abstract":"Selecting a plant root nutrient delivery system is one of the key aspects of designing root modules for space plant growth chambers. This article examines a number of the nutrient delivery systems and shows the most suitable technique for providing nutrients to roots in microgravity, which to date are ion-exchange artificial soils. In addition, this article characterizes the ion composition and hydrophysical parameters of a new Russian artificial ion charged fiber substrate, BIONA-V3. The BIONA-V3 substrate is comprised of ion-exchange resin fibers. The experimental data concerning the effects of anionic and cationic components on plant biomass is presented. Preliminary experiments with BIONA-V3 showed that 1 kg of dry BIONA-V3 produces up to 2.4 kg (fresh mass) of cabbage leaf or 180 g of dry plant mass per 1 dm3 of the substrate. Therefore, the root zone volume can be as small as 120 cm3 per plant. Further optimizing the nutrient composition of the resin fibers can increase space plant growth chamber productivity.","PeriodicalId":86963,"journal":{"name":"Habitation (Elmsford, N.Y.)","volume":"9 1-2","pages":"59-65"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3727/1542966034605261","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"24088043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Removal of sodium chloride from human urine via batch recirculation electrodialysis at constant applied voltage. 恒电压间歇循环电渗析法去除人尿中的氯化钠。

Habitation (Elmsford, N.Y.) Pub Date : 2003-01-01 DOI: 10.3727/1542966034605298

Nilda E Gordils-Striker, Guillermo Colon

引用次数: 2

Habitation 2004 Conference abstracts, January 4-7, 2004, Orlando, FL. 居住2004会议摘要，2004年1月4-7日，奥兰多，佛罗里达州。

Habitation (Elmsford, N.Y.) Pub Date : 2003-01-01

引用次数: 0

Differential expression of hsp60 and hsp70 associated with cytotoxicity under microgravity conditions. 微重力条件下hsp60和hsp70的差异表达与细胞毒性相关。

Habitation (Elmsford, N.Y.) Pub Date : 2003-01-01 DOI: 10.3727/1542966034605315

Tie Hong, Guang-Bi Jin, Shigefumi Cho, Takao Kobayashi, Fumiko Yasuno, Yoshihiko Aikawa, Jong-Chol Cyong

引用次数: 0