Artificial Photosynthesis Sample Clauses

Artificial Photosynthesis. In the context of the Chameleon Suit study, artificial photosynthesis refers to a variety of technical possibilities leading to the recovery of a significant fraction of the EVA astronaut’s respiratory oxygen requirements from exhaled carbon dioxide and exhaled or evaporated water vapor. Like natural photosynthesis, oxygen recovery processes are expected to be powered by incident sunlight on the surface of the spacesuit system since this is the only power source that has been identified which is sufficiently energetic and compatible with the mass and volume requirements for EVA mobility. If successfully developed, they would enable significant reduction in the oxygen storage tanks in the EVA life support backpack, the sole remaining portion of the system untouched by other Chameleon Suit technologies. They will also reduce the need for mission expendables to support XXX. To realize this possibility, technology must be developed which can replicate the ability of natural photosynthesis to apply the energy in incident sunlight to the reduction of CO2 in the presence of water to form O2 and organic compounds. Desirable characteristics of natural photosynthesis, operation at normal ambient temperatures consistent with human comfort, operation with low partial pressure of carbon dioxide, and ability to release oxygen to a relatively high O2 partial pressure atmosphere must be preserved. At the same time, substantial gains in process intensity (i.e. the net amount of oxygen recovered per unit of area, system mass, and time) will be required to achieve practicality in a spacesuit system. In addition, adaptation is required to move the process from an operating environment in which sunlight, the carbon dioxide source, and atmospheric oxygen sink are all available at a single common surface (or surfaces intimately connected to one another as in a leaf), to one in which the sunlit surface may be exposed to a vacuum and must be thermally isolated from atmospheric carbon dioxide source and oxygen sink. The replication of photosynthetic processes in biomimetic engineered systems is believed to be a practical possibility in the near future based on the high level of active research in this area, and rapid progress in understanding the materials and mechanisms involved. The intense interest in photosynthesis and research activity aimed at understanding and mimicking it is illustrated by the publication of a summary article entitled “Photosynthesis and the Web” (Xxx, Xxxx...
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Artificial Photosynthesis. The aim of the artificial photosynthesis research is to obtain an “artificial leaf”, a device able to perform the same hydrolysis reaction as in the natural system in order to obtain hydrogen using water as the raw material. This device needs to have different modules to mimic and perform the various stages of the photochemistry as in the photosynthetic organisms. An antenna system is needed for efficient light harvesting. A charge separator complex is crucial to stabilize the radicals formed upon photoinduced electron transfer and to delay the charge recombination. A robust and efficient catalyst is also necessary to perform the water oxidation cycle. Moreover, the complete device, the artificial leaf, must be self-healing in order to reduce the possible light damage along the whole process [18]. During the last two decades, important scientific progress has been obtained in the field of light harvesting units and charge separation systems [19-21]. However, one of the bottlenecks in artificial photosynthetic research is the chemical design of a synthetic water splitting catalyst able to perform the multi electron oxidation reaction at high turnover number and frequency, with moderate overpotential and high current density.

Related to Artificial Photosynthesis

  • Hepatitis B Vaccine Where the Hospital identifies high risk areas where employees are exposed to Hepatitis B, the Hospital will provide, at no cost to the employees, a Hepatitis B vaccine.

  • Speech Therapy This plan covers speech therapy services when provided by a qualified licensed • loss of speech or communication function; or • impairment as a result of an acute illness or injury, or an acute exacerbation of a chronic disease. Speech therapy services must relate to: • performing basic functional communication; or • assessing or treating swallowing dysfunction. See Autism Services when speech therapy services are rendered as part of the treatment of autism spectrum disorder. The amount you pay and any benefit limit will be the same whether the services are provided for habilitative or rehabilitative purposes.

  • Influenza Vaccine Upon recommendation of the Medical Officer of Health, all employees shall be required, on an annual basis to be vaccinated and or to take antiviral medication for influenza. If the costs of such medication are not covered by some other sources, the Employer will pay the cost for such medication. If the employee fails to take the required medication, she may be placed on an unpaid leave of absence during any influenza outbreak in the home until such time as the employee has been cleared by the public health or the Employer to return to the work environment. The only exception to this would be employees for whom taking the medication will result in the employee being physically ill to the extent that she cannot attend work. Upon written direction from the employee’s physician of such medical condition in consultation with the Employer’s physician, (if requested), the employee will be permitted to access their sick bank, if any, during any outbreak period. If there is a dispute between the physicians, the employee will be placed on unpaid leave. If the employee gets sick as a reaction to the drug and applies for WSIB the Employer will not oppose the application. If an employee is pregnant and her physician believes the pregnancy could be in jeopardy as a result of the influenza inoculation and/or the antiviral medication she shall be eligible for sick leave in circumstances where she is not allowed to attend at work as a result of an outbreak. This clause shall be interpreted in a manner consistent with the Ontario Human Rights Code.

  • Screening After you sign and date the consent document, you will begin screening. The purpose of the screening is to find out if you meet all of the requirements to take part in the study. Procedures that will be completed during the study (including screening) are described below. If you do not meet the requirements, you will not be able to take part in the study. The study investigator or study staff will explain why. As part of screening, you must complete all of the items listed below: • Give your race, age, gender, and ethnicity • Give your medical history o You must review and confirm the information in your medical history questionnaire • Give your drug, alcohol, and tobacco use history • Give your past and current medication and treatment history. This includes any over-the-counter or prescription drugs, such as vitamins, dietary supplements, or herbal supplements, taken in the past 28 days • Height and weight will be measured • Physical exam will be done • Electrocardiogram (ECG) will be collected. An ECG measures the electrical activity of the heart • You may be tested for COVID-19 o Blood tests for human immunodeficiency virus (HIV), hepatitis B, and hepatitis C o Blood tests to see how your blood clots ▪ Fibrinogen ▪ PT/INR/aPTT o Blood tests for amylase and lipase (enzymes that help with digestion, Part B only) o Blood tests for a lipid (fats) panel (Part B only) ▪ Total cholesterol ▪ Triglycerides ▪ HDL ▪ Direct HDL o Blood tests to check your thyroid function (Part B and Part C only) ▪ TSH ▪ Free T4 o Urine to test for drugs of abuse (illegal and prescription) o Urine tests to check your albumin/ creatinine ratio o Females who have not had a period for at least 12 months in a row will have a blood hormone test to confirm they cannot have children • The study investigator may decide to do an alcohol breath test • The use of proper birth control will be reviewed (males only) • You will be asked “How do you feel?” HIV, hepatitis B, and hepatitis C will be tested at screening. If anyone is exposed to your blood during the study, you will have these tests done again. If you have a positive test, you cannot be in or remain in the study. HIV is the virus that causes acquired immunodeficiency syndrome (AIDS). If your HIV test is positive, you will be told about the results. It may take weeks or months after being infected with HIV for the test to be positive. The HIV test is not always right. Having certain infections or positive test results may have to be reported to the State Department of Health. This includes results for HIV, hepatitis, and other infections. If you have any questions about what information is required to be reported, please ask the study investigator or study staff. Although this testing is meant to be private, complete privacy cannot be guaranteed. For example, it is possible for a court of law to get health or study records without your permission.

  • Diagnostic procedures to aid the Provider in determining required dental treatment.

  • Preceptor A per diem Registered Nurse 2 may serve as a preceptor after successfully completing a preceptor workshop or equivalent documented training and agreeing to and being appointed to be specifically responsible for planning, organizing, and evaluating the new skill development of one or more RNs as appropriate enrolled in a defined orientation program, the parameters of which have been set forth in writing by the Employer. This includes teaching, clinical supervision, role modeling, feedback, evaluation (verbal and written) and follow up of the new or transferring employee. The per diem RN 2 preceptor is eligible to receive preceptor premium pay when actually engaged in preceptor role responsibilities with/on behalf of the orienting RN. A per diem RN 2 substituting for the original preceptor during a period of absence and who has been designated to carry out the preceptor's complete responsibility (including following and/or adjusting the plan to meet learning needs and providing oral and written evaluation input) will receive preceptor pay. A preceptor may be assigned to a student when it is determined by the Employer that the employee has completed the required preceptor training or has agreed to and been appointed a preceptor. The employee is specifically responsible for planning, organizing, and evaluating the new skill development of the student as appropriately enrolled in a defined program, the parameters of which have been set forth in writing by the Employer. This includes teaching, clinical supervision, role modeling, feedback, evaluation (verbal and written) and follow up of the student.

  • Vaccination and Inoculation ‌ (a) The Employer agrees to take all reasonable precautions to limit the spread of infectious diseases among employees, including in-service seminars for employees. Where the Employer or Occupational Health and Safety Committee identifies high risk areas which expose employees to infectious or communicable diseases for which there are protective immunizations available, such immunizations shall be provided at no cost to the employee. The Committee may consult with the Medical Health Officer. Where the Medical Health Officer identifies such a risk, the immunization shall also be provided at no cost. The Employer shall provide Hepatitis B vaccine, free of charge, to those employees who may be exposed to bodily fluids or other sources of infection. (b) An employee may be required by the Employer, at the request of and at the expense of the Employer, to take a medical examination by a physician of the employee's choice. Employees may be required to take skin tests, x-ray examination, vaccination, and other immunization (with the exception of a rubella vaccination when the employee is of the opinion that a pregnancy is possible), unless the employee's physician has advised in writing that such a procedure may have an adverse effect on the employee's health.

  • Message Screening 7.4.4.4.1 BellSouth shall set message screening parameters so as to accept valid messages from MRC local or tandem switching systems destined to any signaling point within BellSouth’s SS7 network where the MRC switching system has a valid signaling relationship. 7.4.4.4.2 BellSouth shall set message screening parameters so as to pass valid messages from MRC local or tandem switching systems destined to any signaling point or network accessed through BellSouth’s SS7 network where the MRC switching system has a valid signaling relationship. 7.4.4.4.3 BellSouth shall set message screening parameters so as to accept and pass/send valid messages destined to and from MRC from any signaling point or network interconnected through BellSouth’s SS7 network where the MRC SCP has a valid signaling relationship.

  • Smoke Detectors At Owner's expense, smoke detectors will be installed on the Property in working condition in accordance with the law prior to the tenant's occupancy. During the occupancy, it shall be the tenant's responsibility to maintain all smoke detectors. Owner will replace smoke detector equipment as needed.

  • Transporting Students 1. Employees shall not transport students except in accordance with School Board rules. The Board shall adopt a school board policy outlining the teacher’s and the Board’s responsibilities and liabilities. Said policy shall be included in all school handbooks beginning with the 2004-05 school year. 2. Teachers will not be required to transport pupils to and from activities which take place away from the school grounds.

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