관련링크
Grain and Seed |
작성일24-11-08 08:26 |
본문
We accomplice with Aotearoa’s plant, grain and seed industries providing specialist companies which help our customers meet trade and export requirements. Our educated and experienced Seed & Plant Health Team present Seed Varietal Certification and Plant Export Certification providers on behalf of the Ministry for Primary Industries (MPI). Our Quality Assurance programmes provide consumer confidence to our grain and seed trade prospects. We offer a full range of companies to support industry with Seed Varietal Certification in Aotearoa, New Zealand. Our Seed Certification Bureau,(external hyperlink) Field Services team and internationally recognised Palmerston North Seed Laboratory (NZ01) work with Merchants, Seed Processors and Growers to offer unbiased verification, to make sure the varietal purity of agriculturally essential plant species through successive generations in accordance with the MPI Seed Varietal Certification Scheme. This normal conforms with home, OECD and AOSCA requirements facilitating commerce and exports for our industry companions. We provide a full vary of services protecting seed phytosanitary activities across the seed provide chain. As an MPI permitted Independent Verification Agency (IVA) our Field Services staff provide manufacturing site surveys, auditing and phytosanitary inspections for our clients. Our AsureQuality Laboratories provide independent and specialised services in seed testing and identification (Seed Laboratory), plant (https://augustlwej79135.blog4youth.com) disease testing and detection (Plant Health Laboratory(external link) ), and identification of invertebrates (Pest Lab) in accordance with MPI Pest Identifier Requirements. Our Seed Certification Bureau(exterior link) staff assist our seed industry stakeholders by administration of the Seed Crop Isolation Distance (SCID) mapping database. Our Field Services(exterior hyperlink) workforce present client confidence by way of Quality Assurance programme audits for QAgrainz and NZGSTA and undertake plot testing for OECD/ Plant Varietal Rights.
Mesoporous silica of SBA-15 kind was modified for the primary time with 3-(trihydroxysiyl)-1-propanesulfonic acid (TPS) by post-synthesis modification involving microwave or typical heating to be able to generate the Brønsted acidic centers on the material surface. The samples construction and composition have been examined by low temperature N2 adsorption/desorption, XRD, HRTEM, elemental and thermal analyses. The surface properties have been evaluated by esterification of acetic acid with n-hexanol used as the test response. A much larger effectivity of TPS species incorporation was reached with the applying of microwave radiation for 1 h than conventional modification for 24 h. It was found that the construction of mesoporous help was preserved after modification utilizing both strategies applied on this research. Materials obtained with the usage of microwave radiation showed a superior catalytic exercise and excessive stability. Working on a manuscript? The construction of these solids is characterized by comparatively giant surface area, e.g. 1000 m2 g−1, and the presence of hexagonal channels regular in size.
The diameter of the channels may be designed by the application of various type of natural templates that play a task very similar to that of structure directing agent (SDA) in the course of zeolite synthesis. Much consideration has been devoted to the development of latest catalysts primarily based on silica mesoporous construction and displaying acidic properties. The advantage of 1-pot synthesis modification method is that the oxidation of thiol species takes place in the course of the synthesis of mesoporous materials using hydrogen peroxide as an oxidizing agent. It is essential to generate the acidic SO3H species. For publish-synthesis modification of ordered mesoporous silica with MPTMS, the oxidation of thiol species needs to be carried out in a separate step, after MPTMS immobilization. The oxidation course of often entails an excess of hydrogen peroxide. In this explicit work the esterification of acetic acid with n-hexanol was utilized as a check response. Beside the dedication of acidity of catalysts the product of over-mentioned process, i.e. hexyl acetate, is a useful product, which can be utilized as an illustration as a solvent or paint additive.
In this research the problem with the organosilane removal during oxidation of thiol species after put up-synthesis modification was overcome by the appliance of different sort of organosilane modifier, i.e. 3-(trihydroxysiyl)-1-propanesulfonic acid (TPS), which has already SO3H groupings in its structure. To the better of our information this modifier has not been utilized for the technology of acidic catalysts utilizing the post-synthesis modification procedure. The goal of this research was not only to obtain an environment friendly acidic catalyst but also to significantly shorten the time of modification. On this research the supplies had been prepared in a much shorter time, i.e. 1 h, with the application of microwave heating or using the conventional modification procedure. All chemicals and supplies used have been purchased from commercially available sources and used without additional purification. 99%), toluene (anhydrous) had been purchased from Sigma-Aldrich. 3-(trihydroxysiyl)-1-propanesufonic acid (30-35% in water) was bought from Gelest. HCl (35%) and acetic acid were procured from Chempur.
등록된 댓글이 없습니다.