• 제목/요약/키워드: Palm

검색결과 815건 처리시간 0.036초

Detection of Foliar Nutrients of Oil Palm Crop Using Remote Sensing

  • Ibrahim, Ab.Latif;Hashim, Mazlan;Rasib, Abd.Wahid;Ali, Mohamad Idris;Kadir, Wan Hazli Wan;Sumairi, Mohd Razif;Haron, Khalid
    • 대한원격탐사학회:학술대회논문집
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    • 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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    • pp.558-560
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    • 2003
  • This paper examines the capability of remote sensing technique for detecting and quantifying the foliar nutrients of oil palm crop. Study has been carried out in the Malaysian Palm Oil Board (MPOB) Research Station in Kluang Johore, Malaysia. Result of the study shows a strong relationship between measured foliar nutrient and the spectral reflectance measured using spectroradiometer. Model that has been developed can be used to estimate the nutrient concentration in the oil palm plantation at micro level and also at macro -level using appropriate satellite data.

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Effect of fibre loading and treatment on porosity and water absorption correlated with tensile behaviour of oil palm empty fruit bunch fibre reinforced composites

  • Anyakora, Anthony N.;Abubakre, Oladiran K.;Mudiare, Edeki;Suleiman, MAT
    • Advances in materials Research
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    • 제6권4호
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    • pp.329-341
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    • 2017
  • The challenge of replacing conventional plastics with biodegradable composite materials has attracted much attention in product design, particularly in the tensile-related areas of application. In this study, fibres extracted from oil palm empty fruit bunch (EFB) were treated and utilized in reinforcing polyester matrix by hand lay-up technique. The effect of fibre loading and combined influence of alkali and silane treatments on porosity and water absorption parameters, and its correlation with the tensile behaviour of composites was analyzed. The results showed that tensile strength decreased whilst modulus of elasticity, water absorption and porosity parameters increased with increasing fibre loading. The composites of treated oil palm EFB fibre exhibited improved values of 2.47 MPa to 3.78 MPa for tensile strength; 1.75 MPa to 2.04 MPa for modulus of elasticity; 3.43% to 1.68% for porosity and 3.51% to 3.12% for water absorption at respective 10 wt.% fibre loadings. A correlation between porosity and water absorption with tensile behavior of composites of oil palm EFB fibre and positive effect of fibre treatment was established, which clearly demonstrate a connection between processing and physical properties with tensile behavior of fibre composites. Accordingly, a further exploitation of economic significance of oil palm EFB fibres composites in areas of low-to-medium tensile strength application is inferred.

Palm PDA 용 XHTML 브라우저 구현 (Implementation of a XHTML Browser for Palm PDA)

  • 조기성;조승호;조범준
    • 한국정보처리학회:학술대회논문집
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    • 한국정보처리학회 2002년도 추계학술발표논문집 (중)
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    • pp.1269-1272
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    • 2002
  • 현재 세계적인 이동통신 업체들은 대부분 XHTML Basic 을 수용하여 새로운 브라우저들은 WAP 프로토콜을 배제하고 TCP/IP 기반의 통신을 지원하는 경향을 나타내고 있다. 본 논문에서는 이러한 기술 추세를 반영하여 WAP 2.0 을 지원하는 PalmOS 용 XHTML 브라우저를 개발하였다. 본 브라우저의 특성은 이식성을 높이면서 휴대용 단말기의 자원 제약을 극복하기 위하여 이미지 변환 프락시를 활용하는 방식을 채택한 점이다.

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THE EFFECT OF PALM OIL SUPPLEMENTATION IN ISOCALORIC AND ISONITROGENOUS DIETS OF BROILERS

  • Panja, P.;Kassim, H.;Jalaludin, S.
    • Asian-Australasian Journal of Animal Sciences
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    • 제8권2호
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    • pp.151-158
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    • 1995
  • A study was carried out to investigate the effect of palm oil supplementation on the growth, carcass composition and fatty acid distributions of the broilers fed isonitrogenous and isocaloric diets. This study showed that palm oil supplementation increased feed consumption, weight gain and nitrogen intake. Feed conversion improved at higher fat inclusions, but not significant. Male birds consumed significantly more feed than females resulting in significant increase in energy consumption and weight gain. Increaseing fat content in the ME:P constant diet did not produce significant difference in the fat content of the chicken. Fatty acids content of the diet exert varying effects of the composition and distribution of fatty acids in muscles of the chicken. The fatty acids found in larger amount in the breast and thigh muscles were palmitic, oleic and linoleic. The fatty acids of the breast and thigh muscles were found to correspond the fatty acids of the diets. There were no differences in the fatty acids distribution patterns between the sexes.

POFA를 혼입한 시멘트의 포졸란 반응에 관한 연구 (Study on the Pozzolan Reaction Degree of Palm Oil Fuel Ash as a Mineral Admixture for Sustainable Concrete)

  • 이형민;이한승
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2010년도 춘계 학술대회 제22권1호
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    • pp.335-336
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    • 2010
  • POFA(Palm oil fuel ash)는 Palm fiber 와 shell의 부산물로써 콘크리트용 혼화재로 사용이 가능하다. 그러나 POFA를 사용한 콘크리트의 포졸란 반응에 관한 연구는 매우 적다. 따라서 본 연구에서는 다른 콘크리트용 혼화재료와 동일한 수준으로 POFA의 혼입 치환율을 달리한 모르타르의 압축강도 및 활성도 지수, 포졸란 활성도 지수(API)를 정량적으로 평가하여 혼화재료로서의 적합성을 평가하였다.

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웨이블릿 변환을 이용한 장문인식시스템 (Palmprint recognition system using wavelet transform)

  • 최승달;남부희
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2006년도 심포지엄 논문집 정보 및 제어부문
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    • pp.114-116
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    • 2006
  • This paper is to propose the palm print recognition system using wavelet transform. The palm print is frequently used as the material for the biometric recognition system such as the finger print, iris, face, etc. Since the palm print has lots of properties which include principle line, wrinkles, ridge and so forth, the ways of the implementation of the system are various. In this paper, at first, the palm print image is acquired and then some level of wavelet transform is performed. The coefficients become to be some blocks size of M by N after divided into the horizontal, vertical, diagonal components each level. The mean values, which are calculated with values of each block, are used as the feature vector. To compare between the stored template and the acquired vectors, we adopt the PNN (Probability Neural Network) method.

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Chemical Control of Leaf Spot of Date Palm (Phoenix dactylifera) in Sultanate of Oman

  • Livingston, Sam;Mufargi, Khamis-Al;Sunkeli, Mehmood-Al
    • The Plant Pathology Journal
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    • 제18권3호
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    • pp.165-167
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    • 2002
  • Date palm (Phoenix dactylifera) is an important fruit and cash crop in Sultanate of Oman, occupying nearly 60% of the total cultivated area. However, leaf spots caused by Mycosphaerella tassiana, Alternaria spp., and Dreshcleri sp. have become a threat to date palm's cultivation in recent years. In this study, a field experiment was conducted to find out a suitable chemical spray program to control the disease. A prophylactic spray schedule with mancozeb (Dithane M45), copper oxychloride (Champion), and mancozeb+copper (Trimiltox) effectively controlled the disease when applied at a time when the disease severity index (DSI) was low, ranging from 0 to 1.68. Meanwhile, the disease did not decrease, but instead increased gradually, when the fungicide combination was applied when DSI was high, ranging from 1.78 to 5.37. It was concluded that fungicides should be applied at the early stage or before disease initiation in order to control the disease effectively.

Permeability and abrasion resistance of concretes containing high volume fine fly ash and palm oil fuel ash

  • Homwuttiwong, S.;Jaturapitakkul, C.;Chindaprasirt, P.
    • Computers and Concrete
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    • 제10권4호
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    • pp.349-360
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    • 2012
  • In this paper, compressive strength, water permeability and abrasion resistance of concretes containing high volume fine fly ash (FFA) and fine ground palm oil fuel ash (GPA) were studied. Portland cement type I was replaced with FFA and GPA at dosages up to 70% by weight of binder. Ground river sand (GRS) was also used to replace Portland cement in order to indicate the level of filler effect. Results indicated that FFA was slightly more reactive than GPA. The replacement of 40-70% of FFA produced concretes with compressive strength, permeability and abrasion resistance comparable to those of normal concretes. The incorporation of GPA slightly reduced the performances of concretes as compared to those of FFA concretes. The reduction of Portland cement was partly compensated by the increase in pozzolanic activity of the fine fly ash and palm oil fuel ash and thus enabled the large replacement levels.

Effect of Palm Stearin on Rheological Properties of Metal Injection Molding (MIM) Feedstock

  • Ismail, Muhammad Hussain;Omar, Mohd Afian;Subuki, Istikamah;Jumahat, Aidah;Halim, Zahurin
    • 한국분말야금학회:학술대회논문집
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    • 한국분말야금학회 2006년도 Extended Abstracts of 2006 POWDER METALLURGY World Congress Part 1
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    • pp.223-224
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    • 2006
  • In this paper, rheological characteristics of Metal Injection Moulding (MIM) feedstock using locally binder of palm stearin are presented. The feedstock consisted of 316L-grade stainless steel powder with three different particle sizes and the binders comprise palm stearin and polyethylene. The viscosity of MIM feedstock at different temperatures and shear rates was measured and evaluated. Results showed that, the feedstock containing palm stearin exhibited suitable rheological properties and suitable to produce a homogeneous feedstock that is favorable for injection molding process.

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$PalmPilot^{TM}$에서의 Disconnected Swapping에 관한 연구 (Disconnected Swaping on $PalmPilot^{TM}$)

  • 손정현;이재원;윤현수
    • 한국정보통신학회:학술대회논문집
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    • 한국해양정보통신학회 1998년도 춘계종합학술대회
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    • pp.327-332
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    • 1998
  • 최근 들어 수요와 공급이 급격히 증가하고 있는 PDA(Personal Digital Assistants)의 운영체제는 기존에 많이 연구되어 왔던 운영체제 환경과는 하드웨어의 특성상 메모리 관리나 파일 시스템 등에서 많은 차이점을 보인다. 예를 들어 작은 메모리 용량과 하드디스크 없이 메인 메모리만을 사용해서 모든 데이터를 저장해야 하므로 이를 얼마나 효율적으로 관리해야 하는지가 문제점이 된다. 여기서 우리는 PDA 중에서 비교적 많은 사용자 중을 갖고 있는 USRobotics 사의 PalmPilot [1]을 대상으로 도킹 데스크탑을 이용한 swapping 방법을 모색해 보았다. 기존의 PalmPilot은 그림 1과 같이 데스크탑과 연결하여 자료의 백업과 동기화 작업만을 수행하였다. 하지만 이 순간만큼은 Palmpilot도 일반 데스크탑과 같이 대용량의 하드디스크를 사용할 수 있는 기회가 생기므로 이 때를 잘 이용한다면 사용자는 좀 더 커다란 데이터를 사용할 수 있게 될 것이다.

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