1. Retrofitting existing chemical scrubbers to biotrickling filters for H2S emission control

Biological treatment is a promising alternative to conventional air-pollution control methods, but thus far biotreatment processes for odor control have always required much larger reactor volumes than chemical scrubbers. We converted an existing full-scale chemical scrubber to a biological trickling filter and showed that effective treatment of hydrogen

National Academy of Sciences.

2. Um modelo para controle biológico de pragas associado ao uso de pesticidas

In this work we propose a Coupled Map Lattice to study a predador-prey system where the prey is a pest and the predador is a biological control agent. We consider that the strategy of biological pest control is combined with a planned use of pesticides. That is, the chemical is sprayed only when the prey density is higher than the threshold control. Furtherm

Manancial - Repositório Digital da UFSM. Publicado em: 2014

3. Um modelo para controle biológico de pragas associado ao uso de pesticidas

In this work we propose a Coupled Map Lattice to study a predador-prey system where the prey is a pest and the predador is a biological control agent. We consider that the strategy of biological pest control is combined with a planned use of pesticides. That is, the chemical is sprayed only when the prey density is higher than the threshold control. Furtherm

Biblioteca Digital de Teses e Dissertações do UFSM. Publicado em: 2014

4. Closing the Snack Bar: Developing Methods for Jackfruit Tree (Artocarpus heterophyllus Lamk.) Control in Brazil

ABSTRACT There are several techniques for the control and removal of invasive species that can be applied, and there is a demand among restoration practitioners for plant control methods. This study compared two methods for the control of jackfruit tree: mechanical method of trunk girdling and chemical method of herbicide injection into the trunk. It was eva

Floresta Ambient.. Publicado em: 13/12/2019

5. SOYBEAN CULTIVARS RESPONSE TO THE CHEMICAL CONTROL OF ASIAN RUST / RESPOSTA DE CULTIVARES DE SOJA AO CONTROLE QUÍMICO DE FERRUGEM ASIÁTICA

The response of soybean cultivars to the chemical control of Asian rust (Phakopsora pachyrhizi) was studied in a factorial experiment 10 x 3 x 2. The treatments were ten soybean cultivars (Fundacep 56, M-soy 8000, Nidera 6401, BRS 246, BRS Pampa, AL 72, Coodetec 214, Coodetec 213, Coodetec 219, Nidera 6001), 3 fungicides (azoxistrobina + ciproconazol, tebuco

Publicado em: 2008

6. Funcionalização de nanotubos de Carbono

Carbon nanotubes are very stable systems having considerable chemical inertness due to the strong covalent bonds of the carbon atoms on the nanotube surface. Many applications of carbon nanotubes require their chemical modification in order to tune/control their physico-chemical properties. One way of achieving this control is carrying out functionalization

Química Nova. Publicado em: 2007

7. Proposal for the teaching of the chemical control of supragingival biofilm

The mechanical control of supragingival biofilm is accepted as one of the most important measures to treat and prevent dental caries and periodontal diseases. Nevertheless, maintaining dental surfaces biofilm-free is not an easy task. In this regard, chemical agents, mainly in the form of mouthwashes, have been studied to help overcome the difficulties invol

Brazilian Oral Research. Publicado em: 2010

8. Memory effects and oscillations in single-molecule kinetics

An exactly solvable model for single-molecule kinetics is suggested, based on the following assumptions: (i) A single molecule can exist in different chemical states and the random transitions from one chemical state to another can be described by a local master equation with time-dependent transition rates. (ii) Because of conformational and other intramole

The National Academy of Sciences.

9. Chemical composition and fermentative parameters of heart of palm waste produced from Alexander Palm ensiled with chemical additives

ABSTRACT The objective of this study was to evaluate the chemical composition and the fermentative parameters of heart of palm waste produced from Alexander Palm, ensiled with chemical additives. Treatments consisted of silage of the sheath with or without calcium oxide. In the silage without calcium oxide, we evaluated the control silage (without additive)

R. Bras. Zootec.. Publicado em: 2017-06

10. Aplicação localizada de herbicidas.

ABSTRACT: Curent interest in site-specific weed control considering the weed spatial variability is increasing nowadays, when economical and environmental aspects are considered. This paper reviews the patch spraying methods for herbicides application systems regarding the economical and technical aspects. Using this new approach high herbicides savings are

Planaltina. Publicado em: 2011

11. Spray deposition and chemical control of the coffee leaf-miner with different spray nozzles and auxiliary boom

ABSTRACT The coffee crop requires great spray ability to penetrate into the plant canopy during the application of pesticides. The aim of this study was to evaluate the spray deposition on leaves of coffee plants and the chemical control of the leaf miner provided by the application of different spray nozzles, with and without the use of an auxiliary boom. T

Eng. Agríc.. Publicado em: 2016-08

12. Success factors in the implementation of statistical process control: action research in a chemical plant

Abstract Despite the Statistical Process Control (SPC) be extensively explored in the literature, there are still difficulties in the implementation and maintenance, usually due to lack of attention to Critical Success Factors (CSF). This paper identified by literature review, critical factors that contribute to the success of the SPC and through an action r

Prod.. Publicado em: 05/06/2017