Plant Growth and Human Life Support for Space Travel

2001 ◽  
pp. 947-964
Keyword(s):  
Plant Growth ◽  
Life Support ◽  
Human Life ◽  
Space Travel

Plant Growth and Human Life Support for Space Travel

2001 ◽  
Author(s):  
G Subbarao ◽  
Neil Yorio ◽  
Raymond Wheeler ◽  
Gary Stutte
Keyword(s):  
Plant Growth ◽  
Life Support ◽  
Human Life ◽  
Space Travel

scholarly journals Discovery, characterization and functional improvement of kumamonamide as a novel plant growth inhibitor that disturbs plant microtubules

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Takashi Ishida ◽  
Haruna Yoshimura ◽  
Masatsugu Takekawa ◽  
Takumi Higaki ◽  
Takashi Ideue ◽  
...  
Keyword(s):  
Plant Growth ◽  
Human Life ◽  
Growth Inhibitor ◽  
Herbicidal Activity ◽  
Functional Improvement ◽  
Microtubule Inhibitors ◽  
Plant Microtubules ◽  
Plant Growth Inhibitor ◽  
Derivatives Of ◽  
Synthetic Intermediate

AbstractThe discovery and useful application of natural products can help improve human life. Chemicals that inhibit plant growth are broadly utilized as herbicides to control weeds. As various types of herbicides are required, the identification of compounds with novel modes of action is desirable. In the present study, we discovered a novelN-alkoxypyrrole compound, kumamonamide fromStreptomyces werraensisMK493-CF1 and established a total synthesis procedure. Resulted in the bioactivity assays, we found that kumamonamic acid, a synthetic intermediate of kumamonamide, is a potential plant growth inhibitor. Further, we developed various derivatives of kumamonamic acid, including a kumamonamic acid nonyloxy derivative (KAND), which displayed high herbicidal activity without adverse effects on HeLa cell growth. We also detected that kumamonamic acid derivatives disturb plant microtubules; and additionally, that KAND affected actin filaments and induced cell death. These multifaceted effects differ from those of known microtubule inhibitors, suggesting a novel mode of action of kumamonamic acid, which represents an important lead for the development of new herbicides.

scholarly journals Ethical Issues around Death and Withdrawal of Life Support in Neonatal Intensive Care

2021 ◽  
Author(s):  
Stuti Pant
Keyword(s):  
Intensive Care ◽  
Neonatal Intensive Care ◽  
Life Support ◽  
Ethical Issues ◽  
Ethical Dilemmas ◽  
Human Life ◽  
Traumatic Experiences ◽  
National Guidelines ◽  
Brain Injured ◽  
Discharge Against Medical Advice

AbstractAmongst all the traumatic experiences in a human life, death of child is considered the most painful, and has profound and lasting impact on the life of parents. The experience is even more complex when the death occurs within a neonatal intensive care unit, particularly in situations where there have been conflicts associated with decisions regarding the redirection of life-sustaining treatments. In the absence of national guidelines and legal backing, clinicians are faced with a dilemma of whether to prolong life-sustaining therapy even in the most brain-injured infants or allow a discharge against medical advice. Societal customs, vagaries, and lack of bereavement support further complicate the experience for parents belonging to lower socio-economic classes. The present review explores the ethical dilemmas around neonatal death faced by professionals in India, and suggests some ways forward.

A possible NaCl pathway in the bioregenerative human life support system

2008 ◽  
Vol 63 (7-10) ◽  
pp. 1031-1036 ◽  
Author(s):  
V.I. Polonskiy ◽  
I.V. Gribovskaya
Keyword(s):  
Support System ◽  
Life Support ◽  
Human Life ◽  
Life Support System

Managing Information for Real-Time Decision Support at Community Level

2013 ◽  
Vol 5 (1) ◽  
pp. 60-76
Author(s):  
Hakikur Rahman
Keyword(s):  
Decision Making ◽  
Decision Support ◽  
Decision Support System ◽  
Real Time ◽  
Support System ◽  
Life Support ◽  
Human Life ◽  
Community Level ◽  
Information Support ◽  
Space Technology

Management of real time information systems is gaining importance in all sectors and facets of human life. Varying from their applications in aviation, military, government, space technology, earth science, robotics, human cognitive, life support systems, disasters and emergencies, they emerge in diversified forms and natures. This paper identifies various contexts in the decision making processes of community livelihood; contextualizes the relevant information for taking time-critical decision, conceptualizes appropriate decision making methods, tools, and technologies for proper implementation, and manages an appropriate decision support system focusing knowledge acquisition and learning. Along this perspective, the paper establishes a decision support system framework in the aspect of early warning system in reaching out to grass roots community people at their own language, sign, and interpretation; provides knowledge support during disaster management, especially during post-disaster; provides information support in agriculture related matters, focusing pest control, and pre and post harvesting issues; provides emergency health assistance support during road accidents, or emergency health cases, or epidemic breakouts; and finally provides collaborative learning to improve e-governance at community level.

Canopy structure and imaging geometry may create unique problems during spectral reflectance measurements of crop canopies in bioregenerative advanced life support systems

2007 ◽  
Vol 6 (2) ◽  
pp. 109-121
Author(s):  
Andrew C. Schuerger ◽  
Kenneth L. Copenhaver ◽  
David Lewis ◽  
Russell Kincaid ◽  
George May
Keyword(s):  
Remote Sensing ◽  
Plant Growth ◽  
Spectral Reflectance ◽  
Life Support ◽  
Support Systems ◽  
Canopy Structure ◽  
Advanced Life Support ◽  
Sensing System ◽  
Plant Canopies ◽  
Reflectance Measurements

AbstractHuman exploration missions to the Moon or Mars might be helped by the development of a bioregenerative advanced life-support (ALS) system that utilizes higher plants to regenerate water, oxygen and food. In order to make bioregenerative ALS systems competitive to physiochemical life-support systems, the ‘equivalent system mass’ (ESM) must be reduced by as much as possible. One method to reduce the ESM of a bioregenerative ALS system would be to deploy an automated remote sensing system within plant production modules to monitor crop productivity and disease outbreaks. The current study investigated the effects of canopy structure and imaging geometries on the efficiency of measuring the spectral reflectance of individual plants and crop canopies in a simulated ALS system. Results indicate that canopy structure, shading artefacts and imaging geometries are likely to create unique challenges in developing an automated remote sensing system for ALS modules. The cramped quarters within ALS plant growth units will create problems in collecting spectral reflectance measurements from the nadir position (i.e. directly above plant canopies) and, thus, crop canopies likely will be imaged from a diversity of orientations relative to the primary illumination source. In general, highly reflective white or polished surfaces will be used within an ALS plant growth module to maximize the stray light that is reflected onto plant canopies. Initial work suggested that these highly reflective surfaces might interfere with the collection of spectral reflectance measurements of plants, but the use of simple remote sensing algorithms such as 760/685 band ratios or normalized difference vegetation index (NDVI) images greatly reduced the effects of the reflective backgrounds. A direct comparison of 760/685 and NDVI images from canopies of lettuce, pepper and tomato plants indicated that unique models of individual plants are going to be required to properly assess the health conditions of canopies. A mixed model of all three plant species was not effective in predicting plant stress using either the 760/685 or NDVI remote sensing algorithms.

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