Arms control : U.S. and international efforts to ban chemical weapons : report to the Chairman, Legislation and National Security Subcommittee, Committee on Government Operations, House of Representatives /

"B-244914"--p.1.

Selectivity of chemical weed control systems in conventional cotton

Cotton is highly susceptible to the interference imposed by weed community, being therefore essential to adopt control measures ensuring the crop yield. Herbicides are the primary method of weed control in large-scale areas of production, and usually more than one herbicide application is necessary due to the extensive crop cycle. This study aimed to evaluate the selectivity of different chemical weed control systems for conventional cotton. The experiment took place in the field in a randomized block design, with twenty nine treatments and four replications in a split plot layout (adjacent double check). Results showed that triple mixtures in pre-emergence increased the chance of observing reductions in the cotton yield. To avoid reductions in crop yield, users should proceed to a maximum mixture of two herbicides in pre-emergence, followed by S-metolachlor over the top, followed by one post-emergence mixture application of pyrithiobac-sodium + trifloxysulfuron-sodium.

Efficacy of patient-administered mechanical and/or chemical plaque control protocols in the management of peri-implant mucositis. A systematic review

AIM To systematically assess the efficacy of patient-administered mechanical and/or chemical plaque control protocols in the management of peri-implant mucositis (PM). MATERIAL AND METHODS Randomized (RCTs) and Controlled Clinical Trials (CCTs) were identified through an electronic search of three databases complemented by manual search. Identification, screening, eligibility and inclusion of studies was performed independently by two reviewers. Studies without professional intervention or with only mechanical debridement professionally administered were included. Quality assessment was performed by means of the Cochrane Collaboration's tool for assessing risk of bias. RESULTS Eleven RCTs with a follow-up from 3 to 24 months were included. Definition of PM was lacking or heterogeneously reported. Complete resolution of PM was not achieved in any study. One study reported 38% of patients with complete resolution of PM. Surrogate end-point outcomes of PM therapy were often reported. The choice of control interventions showed great variability. The efficacy of powered toothbrushes, a triclosan-containing toothpaste and adjunctive antiseptics remains to be established. High quality of methods and reporting was found in four studies. CONCLUSIONS Professionally- and patient-administered mechanical plaque control alone should be considered the standard of care in the management of PM. Therapy of PM is a prerequisite for the prevention of peri-implantitis.

U.S. arms control and disarmament agency 1984 annual report : message from the president of the United States transmitting the 24th annual...

At head of title: 99th Congress, 1st session. Joint committee print.

Verification technologies : managing research and development for cooperative arms control monitoring measures.

"OTA-ISC-488"--P. [4] of cover.

Third Review Conference of the Treaty on the Non-Proliferation of Nuclear Weapons [microform] : hearing before the subcommittees on Arms Control, International Security, and Science and on International Economic Policy and Trade of the Committee on Foreign Affairs, House of Representatives, Ninety-ninth Congress, first session, August 1, 1985.

CIS Microfiche Accession Numbers: CIS 86 H381-49

Fiscal year 1983 arms control impact statements : statements submitted to the Congress by the President pursuant to section 36 of the Arms control and disarmament act.

March 1982

Chemical weed-control equipment /

Mode of access: Internet.