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더보기| No | 제목 / 내용 |
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| 1 |
Alumina and alumina extrudates and process for preparation thereof / RELIANCE INDUSTRIES LIMITED The present disclosure relates to an alumina having a surface area in the range of 330-400 m2/g, a pore volume in the range of 1.2-1.7 cc/g, and an average pore diameter in the range of 125-160 Å. The present disclosure also relates to alumina extrudates having a diameter in the range of 1 mm to 3 mm, a surface area in the range of 300-360 m2/g, a pore volume in the range of 0.8-1.3 cc/g and pore diameter in the range of 90-130 Å with a crushing strength in the range of 1-2.5 daN/mm. Further, the present disclosure relates to a process for the preparation of alumina and alumina extrudates. The alumina extrudates can be used as a support for catalyst preparation or as a catalyst or adsorbent in various processes. The process of the present disclosure enhances metal loading capacity, has better metal dispersion, and exhibit delay in deactivation of the catalyst due to mouth pore plugging. |
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ALUMINA AND ALUMINA EXTRUDATES AND PROCESS FOR PREPARATION THEREOF / RELIANCE INDUSTRIES LIMITED The present disclosure relates to an alumina having a surface area in the range of 330-400 m2/g, a pore volume in the range of 1.2-1.7 cc/g, and an average pore diameter in the range of 125-160 Å. The present disclosure also relates to alumina extrudates having a diameter in the range of 1 mm to 3 mm, a surface area in the range of 300-360 m2/g, a pore volume in the range of 0.8-1.3 cc/g and pore diameter in the range of 90-130 Å with a crushing strength in the range of 1-2.5 daN/mm. Further, the present disclosure relates to a process for the preparation of alumina and alumina extrudates. The alumina extrudates can be used as a support for catalyst preparation or as a catalyst or adsorbent in various processes. The process of the present disclosure enhances metal loading capacity, has better metal dispersion, and exhibit delay in deactivation of the catalyst due to mouth pore plugging. |
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POWER SUPPLY UNIT DC-DC CONVERSION / PHILIPS CORPORATE INTELLECTUAL PROPERTY GMBH, BE The invention relates to a power supply unit for direct current to direct current DC-DC conversion having multiple outputs. Such power converters comprise a DC-AC converter 100, a transformer 200 and a plurality of AC-DC onverters 300-i i=1...n each for generating an individual DC-output voltage Vi being provided to a respective load impedance 330-i. Lossy components in said transformer and said AC-DC converters cause undesired voltage drops causing undesired fluctuations of the DC-output voltages. A reduction of said fluctuations of said DC-output voltages is achieved by feeding-back the DC-output voltage of at least one AC-DC converter to said DC-AC converter. Starting from that prior art it is the object of the invention to improve a power supply unit for DC-DC conversion such that a more uniform sharing of the fluctuations of the output voltages is achieved easily and cheaply. This object is achieved according to the present invention by connecting an auxiliary impedance 340 in series to the load impedance connected to one of said AC-DC converters.La presente invention concerne une unite d'alimentation pour la conversion de courant continu-continu comportant une pluralite de sorties. De tels convertisseurs de puissance comporte un convertisseur CC-CA (100), un transformateur (200) et une pluralite de convertisseurs CA-CC (300-i i=1 n) chacun permettant le generation d'une tension de sortie individuelle en courant continu (Vi) fournie a une impedance de charge respective (330-i). Des composants a perte dans ledit transformateur et dans lesdits convertisseurs CA-CC provoquent des chutes de tension indesirables entrainant des fluctuations dans les tensions de sortie en courant continu. On peut obtenir une reduction desdites fluctuations desdites tensions de sortie en courant continu-continu par realimentation de la tension de sortie en continu d'au moins un convertisseur CA-CC vers le convertisseur CC-CA. A partir de cet etat de la technique l'invention propose l'amelioration d'une unite d'alimentation pour la conversion CC-CC de maniere a realiser aisement une repartition uniforme des fluctuations de tensions a moindre cout. Cela est realise selon la presente invention par la connexion d'une impedance auxiliaire (340) en serie a l'impedance de charge reliee a l'un desdits convertisseurs CA-CC. FIG. 1 : 150 UNITE DE CONTROLE A REALIMENTATION DE LA TENSION DE SORTIE B CHARGE 1 C CHARGE 2 |
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MULTIPLEX MODE AMPLIFIER / YOKOGAWA HEWLETT PACKARD LTD (PURPOSE) To increase the power efficiency, by selecting a linear mode or a switching mode in response to the level of an input signal. (CONSTITUTION) The signal CC transmitted through a line 45 is supplied to an amplifier 310 which works in a linear mode as well as to an amplifier 330 which works in a switching mode respectively. The output signals of both amplifiers are supplied to a mode selector 3700. The selector 3700 supplies the output of a pulse width modulator 3500 to a power amplifier 390 when the amplitude of the signal CC is larger than 1V on the line 45. While the output signal of the amplifier 310 is supplied to the amplifier 3900 when the amplitude of the signal CC is smaller than 0.5V. When the amplitude of the signal CC is set between 0.5∼1V, the selection has a hysteresis action. A switching mode is used for such as big action as to drive a servomotor; while a linear mode is used for a fine adjustment. Thus, the power efficiency is increased. |
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ALUMINA, EXTRUSION MOLDED ARTICLE OF ALUMINA AND MANUFACTURING METHOD THEREFOR / RELIANCE INDUSTRIES LTD PROBLEM TO BE SOLVED: To provide alumina useful as a carrier for manufacturing catalysts, a catalyst or an absorbent, an alumina extrusion molded article and a manufacturing method therefor.SOLUTION: There are provided alumina having surface area of 330 to 400 m2/g, pore volume of 1.2 to 1.7 cc/g and average pore diameter of 125 to 160 Å, further an alumina extrusion molded article with diameter of 1 mm to 3 mm, surface area of 300 to 360 m2/g, pore volume of 0.8 to 1.3 cc/g, pore diameter of 90 to 130 Å, crush strength of 1 to 2.5 daN/mm, and a manufacturing method of the alumina and the alumina extrusion molded article, in which metal carried amount is increased, metal dispersion rate is enhanced and catalyst inactivation due to pore blockage is delayed.SELECTED DRAWING: None |
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METAL HALIDE LAMP / HARISON TOSHIBA LIGHTING CORP PROBLEM TO BE SOLVED: To provide a metal halide lamp capable of irradiating light having a wavelength ranging from 300 to 330 nm. SOLUTION: The metal halide lamp comprises a rare gas 1, an airtight receptacle 2, electrodes 3 and 4 and lead wires 5. In the metal halide lamp in which at least mercury and talium iodide are sealed, providing that an inner diameter D of a discharge tube is in the order of ≤30 mm and an input power per centimeter of a discharge tube length (W/cm) is 60 W/cm or more and a potential gradient D (V/cm) at stable lighting conditions is from 9 V/cm to 30 V/cm, a sealed quantity M (mg/cc) of indium, manganese and bismuth respectively is ≥0.01 mg/cc. |
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ALUMINA AND ALUMINA EXTRUDATES AND PROCESS FOR PREPARATION THEREOF / RELIANCE INDUSTRIES LTD The present disclosure relates to an alumina having a surface area in the range of 330-400 m 2 /g, a pore volume in the range of 1.2-1.7 cc/g, and an average pore diameter in the range of 125-160 Å. The present disclosure also relates to alumina extrudates having a diameter in the range of 1 mm to 3 mm, a surface area in the range of 300-360 m 2 /g, a pore volume in the range of 0.8-1.3 cc/g and pore diameter in the range of 90-130 Å with a crushing strength in the range of 1-2.5 daN/mm. Further, the present disclosure relates to a process for the preparation of alumina and alumina extrudates. The alumina extrudates can be used as a support for catalyst preparation or as a catalyst or adsorbent in various processes. The process of the present disclosure enhances metal loading capacity, has better metal dispersion, and exhibit delay in deactivation of the catalyst due to mouth pore plugging. |
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전자기장을 이용한 중금속 제거장치 / 신라대학교 산학협력단 본 발명은 전자기장을 이용한 중금속 제거장치에 관한 것으로, 오염수를 여과하는 여과장치(100): 여과장치(100)로부터 오염수를 공급받는 제1탱크(210): 일단이 여과장치(100)에 연결되고 타단이 제1탱크(210)에 연결되어, 여과장치(100)로부터의 오염수가 제1탱크(210)로 이동하는 제1연결라인(L1): 제1탱크(210)로부터 오염수를 공급받는 전기분해장치(220): 일단이 제1탱크(210)에 연결되고 타단이 전기분해장치(220)에 연결되어, 제1탱크(210)로부터의 오염수가 전기분해장치(220)로 이동하는 제2연결라인(L2): 전기분해장치(220)의 하부에 구비되는 제2탱크(230): 일단이 전기분해장치(220)의 상부에 연결되고 타단이 제2탱크(230)의 상부에 연결되어, 전기분해장치(220)의 상부에 위치한 상등수가 제2탱크(230)로 이동하는 제3연결라인(L3): 제3연결라인(L3) 상에 설치되는 제1밸브(V1): 전기분해장치(220)의 하부에 위치하는 제3탱크(240): 일단이 제3탱크(240)의 상부에 연결되고 타단이 전기분해장치(220)의 하부에 연결되어, 전기분해장치(220)의 하부에 위치한 하등수가 제3탱크(240)로 이동하는 제5연결라인(L5): 제5연결라인(L5) 상에 설치되는 제2밸브(V2): 일단이 제3탱크(240)에 연결되고 타단이 제1탱크(210)에 연결되어, 제3탱크(240)의 오염수가 제1탱크(210)로 이동하는 제6연결라인(L6): 일단이 제2탱크(230)에 연결되는 제4연결라인(L4): 제1연결라인(L1) 상에 설치되는 제1자화수기(251a)와, 제2연결라인(L2) 상에 설치되는 제2자화수기(251b)를 구비한 제1자기장장치(251); 제4연결라인(L4) 상에 설치되는 제3 및 제4자화수기(252a,252b)를 구비한 제2자기장장치(252);를 갖춘 자기장장치(250): 제4연결라인(L4) 상에 설치되며, 제3자화수기(252a) 및 제4자화수기(252b) 사이에 배치되는 마이크로필터(MF):제4연결라인(L4)의 타단이 연결되며 제2탱크(230)로부터 오염수가 유입되는 저장탱크(310); 전해액을 수용하는 제1 및 제2전해탱크(321,322); 중금속을 제거하는 전기막기기(330); 저장탱크(310)의 오염수가 전기막기기(330)를 순환하도록 저장탱크(310) 및 전기막기기(330)를 연결하는 저장탱크 순환라인(DC); 제1전해탱크(321)의 전해액이 전기막기기(330)를 순환하도록 제1전해탱크(321) 및 전기막기기(330)를 연결하는 제1전해탱크 순환라인(EC); 제2전해탱크(322)의 전해액이 전기막기기(330)를 순환하도록 제2전해탱크(321) 및 전기막기기(330)를 연결하는 제2전해탱크 순환라인(CC);을 갖춘 전기막장치(300):를 포함하는 것을 특징으로 하여, 중금속을 효율적으로 제거할 수 있는 효과가 있다. |
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STRUCTURE OF SEMICONDUCTOR DEVICE / OKI ELECTRIC IND CO LTD (PURPOSE) To improve the flatness and step coverage of O3 TEOS-NSG by controlling the film quality of plasma CVD silicon oxide film without any absorption of H-OH appearing near the specific value of infrared ray absorption spectrum and without any increase of absorption due to leaving in atmosphere. (CONSTITUTION) Plasma CVD silicon oxide film (P-SiO) is subjected to 2000Å growth. The P-SiO film quality is controlled so that no H-OH appearing near 3400cm-1 of infrared ray absorption spectrum is absorbed and the absorption is not increased due to leaving in atmosphere. The film quality is achieved under the following conditions, namely TEOS flow rate of 330cc/min using a parallel flat-plate plasma CVD device with a discharge frequency of 13.56MHz, O2 flow rate of 730cc/min, a pressure of 10Torr, a temperature of 390°C, a distance between electrodes of 4.7mm, and RF power of 2.0W/cm2 , thus reducing the hygroscopic property of O3 TEOS-NSG (silicon oxide film by the chemical vapor phase growth at normal temperatures). |
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POLYPHENYLENE SULFIDE FILM / TORAY IND INC (PURPOSE) To provide titled film of improved weatherability, incorporated with specific benzotriazole compound. (CONSTITUTION) The objective film can be obtained by incorporating (A) 100pts. wt. of polyphenylene sulfide (hereafter referred to PPS) constituted mainly by structural unit of formula I with (B) 0.01W10 (pref. 0.1W3)pts.wt. of a compound having in one molecule at least one benzotriazole group (of formula II), having a molecular weight ≥360 (pref. ≥460) (pref. one capable of absorbing rays of wave lengths ranging 350W400mμ) followed by film making. Said PPS film has a virtual density 1,330W1,390g/cc, being pref. 50W100,000 (pref. 70W 50,000) poises in appearent melt viscosity at 300°C under a shear rate of 200sec-1 . |
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더보기| No | 제목 / 내용 |
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| 1 |
화석연료와 원자력의 해수담수생산 경제성 평가 강창무 , , 2008 |
| 2 |
천연물 나노섬유를 활용한 자가-세척력을 지니고 광학적/디지털적으로-투명한 기체차단성 코팅 소재 개발 오동엽 , 한국화학연구원 , 2022 |
| 3 |
지역 광부품 고도화를 위한 광융합 기술개발 오동엽 , 한국전자통신연구원 , 2014 |
| 4 |
에너지저장용 고효율 50Wh/US$급 이차전지 양극소재 개발 Francois Bouchon , 한국유미코아(유) , 2019 |
| 5 |
OpenSSL 암호컴포넌트 시험방법론 연구 김정대 , 한남대학교 , 2004 |
| 6 |
Conductive Pattern Nano Heatpipe 방식을 적용한 모듈형 디밍제어 LED가로등 시스템 개발 최갑용 , (주)케이에스비 , 2016 |