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"Pada artikel ini dibahas mengenai pengaruh mole fraction (x) dan profit germanium pada basis SiGe HBT terhadap unjuk kerja frekuensi dan noise figure (fn) devais."

"Perkembangan teknologi informasi berbasis web saat ini telah menyentuh hampir setiap sendi kehidupan. Kehadiran teknologi ini ditujukan sebagai penunjang dalam memudahkan aktifitas manusia. Salah satu aktifitas bisnis yang sekarang mulai memanfaatkan teknologi ini adalah sistem pengadaan. Electronic procurement merupakan sistem pengadaan yang terotomatisasi dengan menggunakan fasilitas internet. Sistem ini memberikan keuntungan dengan meningkatkan efisiensi dalam mengurangi waktu siklus proses pengadaan.Skripsi ini bertujuan untuk mempelajari manfaat dan hambatan dalam penerapan electronic procurement pada PT. Rekayasa Industri. Perusahaan tersebut merupakan perusahaan konstruksi yang cukup besar di Indonesia dan memiliki intensitas yang tinggi pada aktifitas pengadaannya sejalan dengan banyaknya proyek yang ditanganinya. Untuk mendukung aktifitas pengadaannya guna meningkatkan daya saing, perusahaan ini menggunakan sistem pengadaan barang yang berbasis web yang disebut Electronic Procurement Rekayasa Online (EPRO).Manfaat yang didapat dari penerapan EPRO adalah meningkatkan efisiensi pelaksanaan proses pengadaan di PT. Rekayasa Industri, termasuk dalam hal meminimalkan waktu pelaksanaan, mengurangi biaya operasional dan peningkatan manajemen informasi ke seluruh area pembelian. Sedangkan hambatan paling utama dalam penerapan EPRO adalah sangat bergantungnya sistem EPRO kepada jaringan infrastruktur teknologi informasi yang dapat mengakibatkan kinerja karyawan akan terganggu apabila sistem down.

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Information technology has changed many aspects of human life. It?s role is addressed to support human activities and making their life become easy. One of business activity has been using information technology to support procurement. Eprocurement system is an automatic procurement using internet technology. This system gives benefit to improve efficiency by reducing cycle time in procurement process.

This final assignment's objective is to study the benefits and resistance in applying electronic procurement at PT. Rekayasa Industri. As a big construction company in Indonesia, PT. Rekayasa Industri has deep intensity in procurement activity due to projects that they handle. For supporting their procurement activity and increasing competitive ability, this company use web-based procurement system called Electronic Procurement Rekayasa Online (EPRO).

Benefits from applying EPRO is increasing efficiency in procurement process in PT. Rekayasa Industri, include minimizing cycle time, reducing operational cost and improving information management to all purchasing area. Resistance from applying EPRO is that EPRO depends entirely to information technology infrastructure that may interrupt the productivity of user if the system down."

"Barium strontium titanate (BST) or Ba1-xSrxTiO3 with x=0-1 possesses superior dielectric properties, which are widely used in many applications like in communication technology, electronic instrumentations, and various electrical devices. In this paper, the characterization of the particle and crystallite size of Ba1-xSrxTiO3 (x: 0; 0.3; 0.7) is described. A two-step refinement commenced: first by mechanical milling, and then a further refinement under ultrasonic irradiation in a high power sonicator was applied to Ba1-xSrxTiO3 (x: 0; 0.3; 0.7) particles. The crystalline powders were obtained through mechanically alloyed standard research grade BaCO3, TiO2, and SrCO3 precursors in a planetary ball mill.The powders were first found heavily deformed after 60 hours of milling and then went through a sintering process at 1200°C for 4 hours to form multicrystallite particles. The presence of a single phase in the three samples was solidly confirmed in their respective X-ray diffraction (XRD) patterns. The changes of multicrystallite particles into monocrystallite particles were obtained only after crystalline powders were irradiated ultrasonically in a high power sonicator. The processing variable during ultrasonic irradiation was limited to the duration time of irradiation and particle concentration in the exposed media. It is shown that the average sizes of BST particles at x=0; 0.3; 0.7 before ultrasonic irradiation were 353, 348, and 385 nm, respectively. These respective sizes decreased drastically to 52, 35, and 49 nm, respectively, after 12 hours of ultrasonic irradiation. These particle sizes are almost identical with that of their crystallite size. Hence, the synthesis of monocrystallite particles has been achieved. As the particle concentration of media takes effect, it is shown that an exposed media with a higher particle concentration tends to form multicrystallite particles."

"Telah dilakukan penelitian untuk mengidentifikasi efek krioprotektif madu lengkeng (Dimocarpus longan) terhadap integritas struktur folikel preantral dan profil ekspresi protein apoptosis jalur intrinsik. Sebanyak 24 ekor tikus (Rattus norvegicus L) dikelompokkan menjadi 8 kelompok, terdiri atas KKN, KKV (NaCl 0,9%), KKP1 (EG 7,5%), KKP2 (EG 15%), KP1 (EG 7,5% + ML 7,5%), KP2 (EG 7,5% + ML 15%), KP3 (EG 15% + ML 7,5%), dan KP4 (EG 15% + ML 15%). Pengamatan terhadap densitas,struktur folikel serta ekspresi protein Bax,Bcl2 dan Caspase3 dilakukan terhadap sayatan ovarium yang dibuat dengan metode parafin dengan pewarnaan Hematoksilin-Eosin (HE) dan imunohistokimia. Antibodi primer yang digunakan adalah antibodi poliklonal Rabbit Anti-Bax (A00183 Boster, USA), Rabbit Anti-Bcl-2 (A00040-2 Boster, USA) dan Active Caspase-3 Rabbit Polyclonal Antibody (ab4051 Abcam, UK) dan One Step Neopoly Detection System Kit (BGNK-0025 Biogear, USA). Identifikasi terhadap tiap tipe folikel preantral menggunakan mikroskop cahaya yang terhubung dengan perangkat lunak Image Raster dan IHC profiler. Hasil penelitian menunjukkan, efek krioprotektif madu lengkeng dapat meningkatkan densitas folikel, indeks folikel intak G2 dan G3, menurunkan indeks folikel G1, menekan ekspresi protein Bax dan caspase 3 serta meningkatkan ekspresi protein Bcl2. Dengan demikian, madu lengkeng memiliki potensi untuk dikembangkan sebagai krioprotektan ekstraselular alami dalam aplikasi vitrifikasi ovarium.

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A study was conducted to identify the cryoprotective effect of longan honey (Dimocarpus longan) on the structural integrity of the preantral follicle and the expression profile of the intrinsic pathway of apoptosis protein. A total of 24 rats (Rattus norvegicus L) were grouped into 8 groups, consisting of KKN, KKV (NaCl 0.9%), KKP1 (EG 7.5%), KKP2 (EG 15%), KP1 (EG 7.5% + LH 7.5%), KP2 (EG 7.5% + LH 15%), KP3 (EG 15% + LH 7.5%), and KP4 (EG 15% + LH 15%). Observations on the density, follicular structure and protein expression of Bax, Bcl2 and Caspase3 were carried out on ovarian sections made by paraffin method with Hematoxylin-Eosin (HE) staining and immunohistochemistry. The primary antibodies used were Rabbit Anti-Bax polyclonal antibody (A00183 Boster, USA), Rabbit Anti-Bcl-2 (A00040-2 Boster, USA) and Active Caspase-3 Rabbit Polyclonal Antibody (ab4051 Abcam, UK) and One Step Neopoly Detection System Kit (BGNK-0025 Biogear, USA). Identification of each type of preantral follicle using a light microscope connected to Image Raster software and an IHC profiler. The results showed that the cryoprotective effect of longan honey could increase follicle density, G2 and G3 intact follicle index, decrease G1 follicle index, suppress Bax protein expression and caspase 3 and increase Bcl2 protein expression. Thus, longan honey has the potential to be developed as a natural extracellular cryoprotectant in ovarian vitrification applications."

"It is widely use ofair-conditioning systems in Thailand due to its location. It is located in atropical zone with relatively high temperatures all year round, with highhumidity and high intensity of sunlight. In order to save electrical energy forair-conditioning systems, preventing heat transfer into the building isrequired. The objective of this study is to investigate the physical andthermal properties of concrete blocks. An attempt is made to increase heatresistance of concrete blocks. Foam beads (0-0.30% by weight) and kaolin (0-70% by weight) wereadded in concrete block mixture to increase discontinuous voids in concrete.Compressive strength and water absorption of concrete blocks were tested. Thetesting results indicated that compressive strength decreased when foam beadsand kaolin were added. Water absorption increased when foam beads were added.In contrast, the more kaolin added the less water absorption. The thermalconductivity coefficient of concrete blocks was also investigated. The resultsconfirmed that the higher the amount of foam beads or kaolin added, the higherthe thermal resistance of concrete blocks. Thermal time-lag behavior was alsoinvestigated. The results indicated that concrete block with kaolin took thelongest time in heating and took the shortest time in cooling. These propertiesare good for heat prevention in hot climate regions. These concrete blockswhich were developed and tested in this research conform to the Thai IndustrialStandard. Finally, it can be concluded that because of its thermal behavior,concrete block with kaolin is a suitable energy-saving concrete block for hotand humid climates."

"Nanostructured zincoxide (ZnO) was synthesized via a sonochemical method. The effect of the duration of ultrasonic irradiation in a continuous mode on the generated particles was investigated. Additionally, the effect of flowing either air or nitrogen during the sonication process was investigated. Zinc nitrate andammonia water-based solutions were selected as chemicals without the additionof other surfactants. The generated particles indicated that a wurtzitestructure of ZnO in a hexagonal phase was formed with a crystalline size that increasedas the ultrasound irradiation time increased. The morphology of the generatedZnO particles could be changed from flowerlike to needlelike structures viacontinuous ultrasound irradiation over one to two hours, resulting in increasesin the particle lengths and decreases in the particle diameters from 200 to 80nm. Photoluminescence intensity was also increased with increases in the ultrasonicirradiation times. Photoluminescence spectra were also influenced by theatmospheric environment. Two bands centered at 390 and 500 nm were generatedunder a nitrogen environment. On the other hand, a single wide band with a peakat around 430 nm was found for particles generated under an air environment. Itcan be applied for light emitting diodes (LED) or laser fabrication with acontrolled emitting band."

"besides physical test normally, early detection on the condition of the body by using the image processing of iris is an alternative method to observe the health of human's body, especially the internal organ of the body. in this paper, some image processing methodes are used to enhance the quality of iris image so that the problem that happens in area of pancreas can be detected clearly. the problem is represented by the form of broken tissue in iris. by using genetic programming, this iris image will be used as an input of an artificial intelligence system in detecting the internal organ disorder. the result of this detecting will be compared with the insulin normally test"

"Solar drying provides an alternative to the use of fossil fuel. Solar drying system is one of the most promising applications of crop drying. However, there are problems associated with the intermittent natural of solar radiation and the low intensities of solar radiation. The problems can be remedied by the use of heat storage, auxiliary energy source, control system, larger surface collector and hybrid system. However, this will result in a high capital investment. Economic indicators such as cost ofmaintenance, payback period, internal rate of return can be used to calculate the economic of it application.This paper presents the experience in Malaysia on crop drying. We also present the performance of four solar assisted drying systems for crop drying using different collector types, (a) V-groove solar collector with cabinet dryer, (b) double-pass solar collector with porous media in the lower channel and a flat bed drying chamber, (c) Solar dehumidification system and (d) Photovoltaic-thermal solar drying system."