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    Wyświetlanie 1-5 z 5
    Tytuł:
    Effect of conservation tillage on yield of spring wheat (Triticum aestivum L.) and soil mineral nitrogen and carbon content
    Autorzy:
    Sadiq, M.
    Li, G.
    Rahim, N.
    Tahir, M.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082985.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    agronomic traits
    conservation agriculture
    soil
    mineral nitrogen
    no-till
    C dynamics
    Opis:
    Conservation farming practices using the least soil disturbance and straw-return benefits the crop agronomic attributes and soil nutrient accumulation. The four-year (2016-2019) research was conducted under randomized complete blocks design to explore the agronomic benefit of conservation tillage practices on wheat yield performance and on soil fertility parameters. The two straw treatments consisted of wheat straw-return to the notilled soil and straw incorporation into the conventionally tilled soil. The two tillage treatments were the no-tillage and conventional tillage control. These conservative tillage treatments were compared with the conventional tillage control. In comparison with conventional tillage, the conservation management practices of no-tilled soil, conventionally tilled soil, and no-tillage notably increased the yield by an average of 33, 26, and 18% respectively. Moreover, conservative tillage practices improved the soil nitratenitrogen, ammonium nitrogen and carbon contents in the 0-30 cm soil layer by 12, 9, and 15% respectively over conventional tillage, averaged across conventionally tilled soil, no-tilled soil, and no-tillage. The overall distribution of soil nitrate-nitrogen, ammonium nitrogen, and carbon in the 0-30 cm soil layer with regard to conventionally tilled, no-tilled soil, and no-tillage was greater than conventional tillage, based on Principal Component Analysis. We concluded that conservation tillage practices could replace conventionally tilled practice with respect to productivity, soil mineral nitrogen, and carbon accumulation benefits.
    Źródło:
    International Agrophysics; 2021, 35, 1; 83-95
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Streamlining Malaysias National R&D Areas
    Priorytetyzacja kluczowych obszarów badawczych w Malezji
    Autorzy:
    Rahim, R. A.
    Emran, N. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/256116.pdf
    Data publikacji:
    2012
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy
    Tematy:
    priorytetowe obszary badawcze
    Krajowa Rada ds. Nauki i Badań
    Malezja
    NSRC
    metodyka foresightu
    foresight
    myForesightŽ-Malezyjski Krajowy Instytut ds. Foresightu
    prioritised R&D areas
    Malaysia's National Science & Research Council
    foresight methodology
    Malaysia
    myForesightŽ Malaysia's National Foresight Institute
    Opis:
    This article provides a brief on the processes and methodologies undertaken in conducting the R&D areas prioritisation in Malaysia. The listed prioritised areas will provide the basis for resource allocation of the country for the next 10 years and beyond. The R&D prioritisation initiative involved intense iterative periods of open reflection, networking, consultation and discussion, leading to the joint refining of future visions, long term goals and the common ownership of the focus areas. There are also dedicated groups that are responsible in monitoring output of each discussion to ensure the coordination, cohesiveness and inclusiveness of the necessaries. Endorsement of the recommendation will be the foundation and guidelines for further work especially in steering future R&D activities in Malaysia.
    Artykuł prezentuje procesy i metodykę priorytetyzacji obszarów badawczych kluczowych dla rozwoju Malezji, które w najbliższym dziesięcioleciu otrzymają największe dofinansowanie. Priorytetyzacja obszarów badawczych przeprowadzona została na drodze iteratywnych konsultacji, dyskusji i networkingu, których rezultatem było opracowanie przyszłościowych wizji i długoterminowych celów wspólnych dla całego malezyjskiego społeczeństwa. Proces priorytetyzacji obszarów badawczych był monitorowany i koordynowany przez specjalnie powołane grupy ekspertów, których celem było zapewnienie spójności i integracji potrzeb społecznych. Zatwierdzenie rekomendacji stanowić będzie podstawę i wytyczne do dalszych prac w obszarze ukierunkowywania przyszłych działań badawczo-rozwojowych w Malezji.
    Źródło:
    Problemy Eksploatacji; 2012, 4; 139-150
    1232-9312
    Pojawia się w:
    Problemy Eksploatacji
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of High Entropy Alloy as Catalyst for Azo Dye Degradation in Fenton Process
    Autorzy:
    Hassan, Nur Hudawiyah Abu
    Nasir, Nisa Syukrina Mat
    Rahman, S. N. A.
    Irfan, Abd Rahim
    Nordin, Norhuda Hidayah
    Powiązania:
    https://bibliotekanauki.pl/articles/2203739.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    azo dye
    catalyst
    fenton process
    high entropy alloys
    HEAs
    Opis:
    Azo dye is widely used in the textile industry since it is cost effective and simple to use. However, it becomes a continuous source of environmental pollution due to its carcinogenicity and toxicity. Various methods had been used to remove the azo dye in solution. One of the famous and frequently used is the Fenton process. The Fenton process is one of the advanced oxidation processes where iron catalysed hydrogen peroxide to generate hydroxyl radical. Treating azo dyes in solution requires a catalyst to enhance the process of degradation. Herein, high entropy alloys (HEAs) have been proposed as a catalytic material to enhance the performance of Fenton process for azo dye degradation. HEAs have been reported as a promising catalyst due to its high surface area. The higher the number of active sites, the higher the rate of azo dye degradation as more active sites are available for adsorption of azo dyes. The results have shown that HEAs can be used as a catalyst to fasten the Fenton reaction since the degradation time is proven to be shorter in the presence of HEAs. The method derived from the result of this study will contribute in treating azo dyes for wastewater management in the Fenton process.
    Źródło:
    Archives of Metallurgy and Materials; 2023, 68, 1; 209--213
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Utilization of services and referrals through dental outreach programs in rural areas of India. A two year study
    Autorzy:
    Asawa, K.
    Bhanushali, N.V.
    Tak, M.
    Kumar, D.R.V.
    Rahim, M.F.B.A.
    Alshahran, O.A.
    Divakar, D.D.
    Powiązania:
    https://bibliotekanauki.pl/articles/877920.pdf
    Data publikacji:
    2015
    Wydawca:
    Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
    Tematy:
    motivation
    utilization
    service
    referral
    dental outreach programme
    rural area
    rural population
    India
    Opis:
    Background. Oral health care services are often sparse and inconsistent in India therefore it is often difficult for poor people to get access to the oral health care services. The approach by dental institutions with the help of community outreach programs is a step ahead in overcoming this situation. Objectives. The study was conducted to evaluate the number of patients, disease pattern and the services provided in the outreach programmes and also effectiveness of patient referral. Methods. A retrospective study was conducted and the data were obtained from records of outreach programs conducted, in last 2 years by Pacific Dental College and Hospital. The data were analysed using descriptive statistics for the computation of percentages Chi-square test was applied to know the association of effectiveness of referral with age and gender. Confidence level and level of significance was fixed at 95% and 5% respectively. Results. A total of 22982 individuals in the age group of 4-80 years attended the outreach program. Dental caries (42.3%), periodontal diseases (63.2-69.0%) and dental fluorosis (33.7-35.0%) were commonly observed diseases. Effectiveness of referral was significantly high among the middle age adults and females (P<0.05). The effectiveness of referral was highly improved in 2013 after establishment of certain guidelines and strategies. Conclusion. The approaches by dental institutions with the help of community outreach programs can spread awareness and disseminate treatment and thereby enhancing access to care and eliminating access to care within the rural communities.
    Źródło:
    Roczniki Państwowego Zakładu Higieny; 2015, 66, 3
    0035-7715
    Pojawia się w:
    Roczniki Państwowego Zakładu Higieny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Extraction of Tannic Acid from Kenaf Bast Fibre using Ultrasonic Assisted Extraction
    Autorzy:
    Mohamad, Mardawani
    Ibrahim, H. A.
    Nasir, M. F. M.
    Mohidem, Nur Atikah
    Shoparwe, N. F.
    Teo, Pao Ter
    Masri, Mohamad Najmi
    Irfan, Abd Rahim
    Powiązania:
    https://bibliotekanauki.pl/articles/2134102.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ultrasonic assisted extraction
    UAE
    sonication time
    duty cycle
    extraction process
    kenaf bast fibre
    Opis:
    Tannic acid or tannin, type of phenolic compound contains in kenaf bast fibre. Conventional extraction has certain limitations in terms of time, energy, and solvent consumption. Ultrasound assisted extraction (UAE) can extract bioactive components in shorter time, low temperature, with lesser energy and solvent requirement. UAE as alternative extraction technique is better equipped to retain the functionality of the bioactive compounds. In this study, the conditions for ultrasound assisted extraction (UAE) of tannic acid from kenaf bast fibre by assessing the effect of sonication time and different duty cycles were optimized. The use of ultrasound to extract tannic acid from kenaf bast fiber was evaluated. Ultrasound-assisted extraction (UAE) was carried out using ethanol as solvent to intensify the extraction efficacy. Phytochemical screening was conducted to identify the presence of tannic acid in extracts. The extracts then were analyzed using High-Performance Liquid Chromatography (HPLC) and Scanning Electron Microscopy (SEM). It was found that 0.2429 mg/mL of tannic acid was obtained under the extraction conditions of extraction temperature of 40℃, sonication time of 20 minutes and duty cycle of 50%. From SEM analysis, it was found that the raw sample demonstrated rough surface and no porous but kenaf bast fibre display smoother surface with less impurities and few pores appeared after the extraction process using UAE. These results indicate that ultrasound-assisted extraction is an efficient method for extracting tannic acid from kenaf bast fibre with the advantages of lower extraction time and higher extraction yield.
    Źródło:
    Archives of Metallurgy and Materials; 2022, 67, 3; 1061--1066
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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