Photochemical Systems Sample Clauses

Photochemical Systems. Pure water does not absorb solar radiation, except in the infrared, where photon energies are too low to simulate photochemical action. Thus any photochemical process to drive reaction 7 must involve a sensitizer, that is, a molecule or semiconductor that can absorb sunlight and stimulate photochemical reactions which ultimately lead to the generation of hydrogen in reaction 7. The absorption of a single photon (in the solar wavelength ranges) can, at most, cause the transfer of one electron in a photoredox process. Since reaction 7 is a two-electron process (4 electrons for O2), catalysts for the storage of electrochemical equivalents are necessary in practical schemes. Figure 2 shows the minimal scheme for a process to split water involving a photochemical sensitizer S with redox storage catalysts cat-ox and cat-red. By utilizing sacrificial donors or acceptors to replace the oxidation or reduction half-reactions, respectively, it is possible to study each half reaction separately. Indeed almost all studies to date have been of this type, with very few studies of the complete reaction.
Sample 1
AutoNDA by SimpleDocs
Photochemical Systems. No photochemical system has as yet approached an efficiency of 10%; indeed it is arguable that no complete solar water splitting process has yet been demonstrated and confirmed in several other laboratories. Photochemical systems suffer from several difficulties:
Sample 1

Related to Photochemical Systems

  • FABRICATION Making up data or results and recording or reporting them.

  • Manufacturing (a) The Supplier shall without limitation be responsible, at no additional cost to the Purchaser, for: sourcing and procuring all raw materials for the Products; obtaining all necessary approvals, permits and licenses for the manufacturing of the Products; providing sufficient qualified staff and workers to perform the obligations under this Purchase Agreement; implementing and maintaining effective inventory and production control procedures with respect to the Products; and handling other matters as reasonably requested by the Purchaser from time to time.

  • Chemicals All chemicals are provided by Xxxxxxxx Pools & Spas at additional costs per the agreement. These include, but are not limited to, sanitizer, balancing chemicals, algaecide, & cleaners. 4.

  • Components Patheon will purchase and test all Components (with the exception of Client-Supplied Components) at Patheon’s expense and as required by the Specifications.

  • Infrastructure Improvements The design, redevelopment and construction and completion of certain infrastructure improvements, including sewer, stormwater, electrical and water main improvements, along with other similar improvements.

  • Infrastructure (a) The Borrower has and will maintain a sufficient infrastructure to conduct its business as presently conducted and as contemplated to be conducted following its execution of this Agreement.

  • Infrastructure Vulnerability Scanning Supplier will scan its internal environments (e.g., servers, network devices, etc.) related to Deliverables monthly and external environments related to Deliverables weekly. Supplier will have a defined process to address any findings but will ensure that any high-risk vulnerabilities are addressed within 30 days.

  • Radiation Therapy/Chemotherapy Services This plan covers chemotherapy and radiation services. Respiratory Therapy This plan covers respiratory therapy services. When respiratory services are provided in your home, as part of a home care program, durable medical equipment, supplies, and oxygen are covered as a durable medical equipment service.

  • Products Products available under this Contract are limited to Software, including Software as a Service, products and related products as specified in Appendix C, Pricing Index. Vendor may incorporate changes to their product offering; however, any changes must be within the scope of products awarded based on the posting described in Section 1.B above. Vendor may not add a manufacturer’s product line which was not included in the Vendor’s response to the solicitation described in Section 1.B above.

  • Unbundled Channelization (Multiplexing) 5.7.1 To the extent NewPhone is purchasing DS1 or DS3 or STS-1 Dedicated Transport pursuant to this Agreement, Unbundled Channelization (UC) provides the optional multiplexing capability that will allow a DS1 (1.544 Mbps) or DS3 (44.736 Mbps) or STS-1 (51.84 Mbps) Network Elements to be multiplexed or channelized at a BellSouth central office. Channelization can be accomplished through the use of a multiplexer or a digital cross-connect system at the discretion of BellSouth. Once UC has been installed, NewPhone may request channel activation on a channelized facility and BellSouth shall connect the requested facilities via COCIs. The COCI must be compatible with the lower capacity facility and ordered with the lower capacity facility. This service is available as defined in NECA 4.

Time is Money Join Law Insider Premium to draft better contracts faster.