baber/WOPTO huggingface dataset:
Patent KR-20060109562-A (KR)
Title: Method for approving a settlement of a financetransaction depend on an outsider
Inventor: JUNG KWAN SEEN
IPC: H04W12/06
Filed: 2005-04-15
Abstract: A method for performing financial transaction with approval of the third person by using a mobile terminal is provided to prevent financial accidents such as illegal credit card use, remittance, and withdrawal by making the third person preset from a user vicariously approve the financial transaction when the user performs the financial transaction. The user sets the third person for approving the financial transaction of the user to a management server of a financial institution(100). The third person information is stored to a database(200). Financial transaction information is received from a financial transaction terminal(300). The third person information preset by the user is read from the database(400). The current financial transaction information is transmitted to a mobile terminal of the third person based on the read third person information(600). If approval information is received, the financial transaction is approved and completed(900). If the approval information is not received or the third person refuses the financial transaction, the financial transaction is interrupted(1000).
Patent KR-20050043851-A (KR)
Inventor: CHO MOO HEE
IPC: H04B1/40
Filed: 2005-04-18
Abstract: 본 발명은 자동저장기능을 가지는 휴대단말기에 관한 것으로서, 
     휴대단말기의 기능을 제어하는 로직을 포함하는 프로세서가, 송신 또는 수신의 통화가 종료되어 통화종료버턴을 작동(100)하게 되면, 상기 프로세서는 송신 또는 수신한 전화번호가 기히 저장등록된 전화번호와 일치하는 지를 비교(110)하고, 만일 저장되어 있지 아니하는 전화번호라면(NO) 저장을 요청(120)하여 통상적인 전화번호 등록-저장메뉴 상에서 사용자가 등록(130)하게 하고, 만일 저장된 전화번호라면(YES)라면 그대로 통화종료(140) 시키게 되는 로직을 더 포함하고, 상기 프로세서는 전화번호관련메뉴화면(10)에서 추가적으로 설정되어지는 통화번호자동저장(11) 메뉴를 더 가지는 것을 특징으로 한다.
Patent KR-20060047249-A (KR)
Inventor: ISHIZAKI MAKOTO
IPC: H01R4/66
Filed: 2005-04-20
Abstract: 접지 도체(1)는 도전성 금속부(2)와 도전성 금속부(2)를 커버하는 도전성 케이싱(casing)부(3)로 구성된다. 도전성 케이싱부(3)는 0.01 내지 10 Ωㆍm의 비저항을 갖는다. 접지 도체(1)가 도전성 금속부(2)와 이 도전성 금속부(2)를 커버하는 도전성 케이싱부(3)로 구성되기 때문에 도전성 금속부(2)는 도전성 케이싱부(3)를 통해 지면에 접속된다. 도전성 금속부(2)는 지면에 직접 접속되지 않고 도전성 케이싱부(3)를 통해 지면에 전기접속된다. 이것은 도전성 금속부(2)의 부식을 방지한다. 이것은 또한 도전성 금속부(2)에서의 단선(斷線, disconnection)을 방지할 수 있게 해준다. 
       
     접지 도체
Patent KR-20060110914-A (KR)
Title: A mobile communication terminal and a mobile communcaion system capable of displaying caller identification through using avatars
Inventor: CHOI GOAN MOOK
IPC: H04B1/40
Filed: 2005-04-20
Abstract: A mobile communication terminal and a mobile communication system capable of displaying CID(Caller ID) by using avatars are provided to induce a user's interest related to an avatar which is used in displaying the CID and to increase a profit for an avatar content provider. A mobile communication terminal capable of displaying CID(Caller ID) by using avatars comprises a main controller(16), an avatar component storage unit(13), an avatar processor(15) and an avatar storage unit(14). The main controller(16) extracts avatar index information from a received message if an alert with information message is received together with a call connection request from a mobile communication network via a forward traffic channel at a transmitting side's request of the call connection. The avatar component storage unit(13) stores each component of the avatar. The avatar processor(15) receives the avatar index information from the main controller(16), reads the avatar components, matched with the avatar index information, from the avatar component storage unit(13), assembles the read avatar components into one complete avatar, and displays the assembled avatar on an LCD while a call arrival sound rings. The avatar storage unit(14) stores the avatar displayed by the avatar processor(15).
Patent KR-20060111742-A (KR)
Title: Transflective type liquid crystal display device and method for fabricating the same
Inventor: JUNG JAE YUN
IPC: G02F1/1335
Filed: 2005-04-25
Abstract: A semi-transmission type LCD and a method for manufacturing the same are provided to prevent the peeling of a reflective electrode, by forming a conductive layer having an excellent adhesive characteristic with an organic insulating layer, which is disposed between the reflective electrode and the organic insulating layer. A gate line and a data line cross each other to define a pixel region on a substrate(211), wherein the pixel region is composed of a reflective portion and a transmissive portion. A thin film transistor is formed at a crossing region of the gate line and the data line. An organic insulating layer(216) is formed in the reflective portion of the pixel region. A first reflective electrode(229) is connected to a drain electrode(215d) of the thin film transistor, and formed on the organic insulating layer. A second reflective electrode(230) is formed on the first reflective electrode.
Patent KR-20060047484-A (KR)
Inventor: ASAO YASUFUMI
IPC: G02F1/1335
Filed: 2005-04-27
Abstract: 본 발명에 의하면, 1개의 단위화소는 적색필터를 가진 화소(a)와, 전기적으로 제어되는 복굴절(ZCB)모드에서 녹색 및 청색을 표시할 수 있는 화소(b)로 구성되어 있다. 상기 화소(b)는 색순도를 높이기 위해서 시안색필터를 가진다. 그 결과, 적색에 대해서 연속 중간조표시를 행하는 것이 가능하다. 녹색 및 청색에 대해서는, 면적계조모드에서 단계적인 또는 연속적인 중간조표시를 행하는 것이 가능해진다. 시안색필터의 사용에 의하여 낮은 전압에서 녹색표시를 행하는 것이 가능하다.
Patent KR-20060114069-A (KR)
Title: Vanadium dioxide ingot for substituting ferro-vanadium and method of producing the same
Inventor: PARK BYUNG GON
IPC: C01G31/00
Filed: 2005-04-27
Abstract: Provided are a vanadium dioxide ingot for substituting ferro-vanadium which does not generate environmental problems, and can overcome problems of vanadium pentoxide, and a method for preparing the same. The vanadium dioxide ingot comprises 10-40 wt% of alkali earth metal salt, 2-7 wt% of binder, and the rest of oil dust cinder, and other inevitable impurities. The cinder comprises 50-70 wt% of vanadium dioxide. The vanadium dioxide ingot is manufactured by the method comprising the steps of: preparing a raw material having composition as the above, and water; mixing and homogenizing the water and the raw material in a mixer; forming the mixed material into an ingot having a size of 5-50 mm in a mold; and drying the formed vanadium dioxide ingot.
Patent KR-20060114566-A (KR)
Title: Following apparatus of welding line using electromagnetic sensor
Inventor: KIM SU HO
IPC: B23K9/127
Filed: 2005-05-02
Abstract: An equipment for tracking a welding line using an electromagnetic sensor is provided to guide a welding apparatus by accurately following the welding line irrespective of external environment even though sunlight is strong, or surrounding noise is severe in the fields. In an automatic welding apparatus in which a welding torch(T) is installed, an equipment for tracking a welding line using an electromagnetic sensor comprises: a first LM guide(1) vertically disposed on the front of the welding torch; a second LM guide(2) installed on a lower end of the first LM guide and vertically movably disposed in a horizontal direction; an electromagnetic sensor(3) which is installed on the second LM guide so that the electromagnetic sensor is freely movable in a horizontal direction, and which is disposed such that the electromagnetic sensor is formed on the same axial line of the welding torch; a laser sensor(4) installed on the electromagnetic sensor to detect elevation change of the electromagnetic sensor; and a control panel for detecting change of flux density through information in the electromagnetic sensor to determined a welding line, and controlling the welding apparatus so that the welding apparatus follows the welding line by detecting the welding line while processing as an error the flux density change according to the elevation change of the electromagnetic sensor through information in the laser sensor.
Patent KR-20060115189-A (KR)
Title: Paste supply apparatus
Inventor: KIM CHAK HI
IPC: B44C7/02
Filed: 2005-05-04
Abstract: A glue supply device is provided to uniformly and smoothly apply glue by pushing out the glue by rotating a ball according to the application direction due to a low friction coefficient for the ball. The glue supply device(10) combined to the side of a container receiving the liquid glue to discharge the inner liquid glue to the outside is composed of a body(20) having a tapered part(21) formed at one side and a discharge port(22) formed in the end of the tapered part to discharge the liquid glue to the outside; a ball(30) installed in the body to open and close the discharge port, wherein a portion of the ball is protruded outward through the discharge port; and a pressurizing unit(40) coming into contact with the ball at one point and pressing the ball by elastic force of an elastic body(41) installed at one side.
Patent KR-20060046143-A (KR)
Inventor: TAKAHAMA MASARU
IPC: G03F7/004
Filed: 2005-05-24
Abstract: (과제) 난휘발성이며 도포성이 양호한 반사방지막 형성용 조성물, 특히 193nm 의 ArF 엑시머레이저 광원 노광에서의 반사광의 악영향을 억제하여 도포성이 양호한 반사방지막 형성용 조성물, 나아가 고에칭 특성을 가지며, 보이드가 없는 그 반사방지막 형성용 조성물로 이루어지는 반사방지막, 및 그 반사방지막 형성용 조성물을 사용한 레지스트 패턴 형성방법을 제공하는 것을 과제로 한다.  
     (해결수단) 본 발명의 반사방지막 형성용 조성물을, (A) 난휘발성 광흡수 화합물과, (B) 실록산 폴리머와, (C) 용제를 함유하여 이루어진 반사방지막 형성용 조성물로 구성하고, (A) 성분으로 페닐알콕시실란의 가수분해 반응에 의한 생성물을 사용한다. 
     반사방지막 형성용 조성물
Patent KR-20050058318-A (KR)
Inventor: CHOI HYUN HO
IPC: H05K13/08
Filed: 2005-05-25
Abstract: 본 발명은 다수의 인쇄 회로 기판들을 1 차 검사 후 불량 표시 이전에 실시간으로 2 차 검사하여 과검출을 방지하는 자동 광학 검사 시스템 및 그 방법에 관한 것이다. 자동 광학 검사 시스템은 권출부와 권취부 사이에 1 차 및 2 차 검사부와 불량 처리부 및 제어부를 포함한다. 2 차 검사부는 1 차 검사에서 불량으로 판별된 이미지 데이터의 인쇄 회로 기판을 불량 표시하기 전에 실시간으로 모니터링하여 과검출을 방지한다. 이 때, 제어부는 이미지 데이터의 불량 위치 개수를 기준값과 비교하여 양품성 이물에 의한 불량인지 실제 패턴 불량인지를 판별한다. 따라서 본 발명에 의하면, 자동 광학 검사 시스템은 불량 표시 이전에 실시간으로 2 차 검사를 수행함으로써, 검사 속도의 향상과, 제조 수율이 증가된다.
Patent KR-20060066601-A (KR)
Inventor: PARK HYEONG JUN
IPC: H04L27/26
Filed: 2005-06-09
Abstract: 본 발명은 다중 반송파 무선 통신 시스템의 변조 장치 및 타이밍 옵셋 조절 방법에 관한 것이다. 
     변조 장치에서, 변조기 제어부는 타이밍 옵셋 정보를 수신하여 타이밍 옵셋값을 출력하고, 심벌 변환부는 변조기 제어부의 제어에 따라 채널 부호화된 데이터를 심벌 형태로 변환한다. 프레임 구성부는 심벌 변환부에서 변환된 심벌을 전송 프레임으로 형성하고, 역 퓨리에 변환부는 전송 프레임을 다중 반송파에 대한 심벌로 변조한다. 타이밍 옵셋 조절부는 심벌을 순차적으로 수신하며, 타이밍 옵셋을 조절하여 심벌을 출력한다. 이러한 타이밍 옵셋 조절부는 3개 이상의 다중 메모리 버퍼로 이루어진다. 
       
     타이밍 옵셋, OFDMA, 다중 메모리 버퍼
Patent KR-20060131568-A (KR)
Title: Composition comprising flavonoid compound for skin whitening
Inventor: HAN CHEOL KYU
IPC: A61Q19/02
Filed: 2005-06-16
Abstract: A composition for skin whitening comprising a flavonoid compound is provided to inhibit tyrosinase activity, melanin production and pigmentation, and avoid side effects on the skin. The composition for skin whitening comprises the flavonoid compound represented by the formula(1), wherein R2, R5, R6, R7, R8, R2', R3', R4', R5' and R6' are each independently H, -OH, -OCH3 or -OCH2CH3; the flavonoid compound represented by the formula(1) is isolated from plants; the composition is formulated as cosmetics, soap or skin external ointment; and the cosmetic is selected from soft lotion, nutrition lotion, cream, pack, gel and essence.
Patent KR-20060133174-A (KR)
Title: Method for forming gate of flash device
Inventor: PARK EUN SHIL
IPC: H01L27/105
Filed: 2005-06-20
Abstract: A method for forming a gate of a flash memory device is provided to reduce the thickness of a tungsten silicide layer by increasing a thickness of a tungsten silicide layer. A tunnel oxide layer(11), a first polysilicon layer(12) for floating gate, and a dielectric layer(13) are formed on a semiconductor substrate(10). A second polysilicon layer(14) for control gate is formed by over-doping phosphor on the dielectric layer. A tungsten silicide layer(15) is formed by over-coating tungsten on the second polysilicon layer. A gate(17) is formed by patterning the tungsten silicide layer, the second polysilicon layer, the dielectric layer, and the first polysilicon layer. A thickness and a grain side of the tungsten silicide layer are increased by a thermal process.
Patent KR-20060133323-A (KR)
Title: Thin film transister of fringe field switching type and fabricating method thereof
Inventor: CHO HEUNG LYUL
IPC: G02F1/136
Filed: 2005-06-20
Abstract: A fringe field switching type of thin film transistor substrate, and a manufacturing method thereof are provided to reduce the number of manufacturing processes by forming a transparent conductive layer and a metal layer through one mask process using a halftone mask or a diffractive exposure mask, and not forming a passivation layer protecting a channel region, a source/drain electrode, a data line, a data pad and a gate pad. A gate line has a multi-layered structure of a transparent conductive layer(101) and a metal layer stacked on a substrate. A data line intersects the gate line with a gate insulating layer(122) interposed therebetween. A thin film transistor includes a gate electrode(106) connected to the gate line, a source electrode connected to the data line, and a drain electrode(110) facing the source electrode. A common line is parallel to the gate line, and has a multi-layered structure of the transparent conductive layer and the metal layer. A common electrode plate(114) is integrated with the transparent conductive layer of the common line, and is formed in a pixel region defined by intersection of the gate line and the data line. A pixel electrode slit(118) covers the drain electrode of the thin film transistor, and overlaps the common electrode plate in the pixel region with the gate insulating layer interposed therebetween. A data protection pattern(138) covers the data line and the source electrode.
Patent KR-20070002209-A (KR)
Title: Method for providing magnifier by using camera and mobile telecommunication terminal thereof
Inventor: JEON SANG O
IPC: H04B1/38
Filed: 2005-06-30
Abstract: A method for supplying a magnifier function by using a camera and a mobile communication terminal using the method are provided to service the magnifier function by displaying a taken character with a font embedded in the terminal itself after the character is taken in a preview process, and by magnifying or minimizing the font, thus a user can clearly recognize the character. As a user inputs a key, a mobile communication terminal enters a preview operation(S410). The terminal provides a magnifier menu, and enters the magnifier menu as the user inputs a key(S420). The terminal takes a character image by using a camera in a preview process(S430). The terminal decides whether a character is recognized from the taken character image(S440). If so, the terminal converts the recognized character into an embedded font to display the converted character(S450). The terminal receives selection for the font to be magnified/minimized through cursor movement from the user, and magnifies/minimizes the selected font to display the font(S460).
Patent KR-20070087713-A (KR)
Title: Make-up brush
Inventor: YANG WON DONG
IPC: A45D40/26
Filed: 2005-06-30
Abstract: A functional make-up brush is provided to obtain a make-up brush which has sterilizing function, antifungal function, deodorizing effects, effects of generating aroma and effects of emitting anions and far infrared rays. A make-up brush includes a brush, a brush fixing portion and a handle. The brush is used for user's skin. The brush fixing portion fixes the brush. The handle is used for a user to hold the body of the make-up brush. 0.01-30 weight% of nano-silver and tourmaline and 0.01-10 weight% of a perfume agent are mixed to a body of the make-up brush based on the entire 100 weight% of the material used to make the make-up brush during the manufacturing process or final process of the make-up brush. The nano-silver and tourmaline injected into the body of the make-up brush have a diameter of 0.01-500nm.
Patent KR-20070009787-A (KR)
Title: Power amplifier apparatus and method for predistortion compensation
Inventor: HA SUNG JAE
IPC: H03F1/08
Filed: 2005-07-14
Abstract: A power amplifying apparatus and a method for predistortion compensation are provided to linearly output the matched signal in a matching unit without a distortion by being amplified and outputted in a second power amplifying unit having an opposite characteristic to a nonlinear characteristic of a first power amplifying unit based on a control of a bias power. An input matching unit(110) matches an inputted high frequency signal. A first low frequency blocking unit(120) is connected to the input matching unit(110), and blocks a low frequency signal. A first signal amplifying unit(130) has power amplifying units which are connected to each other in parallel or series and amplify the blocked signal in the first low frequency blocking unit(120) nonlinearly. An intermediate matching unit(180) matches the signal amplified in the first signal amplifying unit(130) without loss. A second low frequency blocking unit(190) is connected to the intermediate matching unit(180), and blocks the low frequency signal. A second signal amplifying unit(200) has power amplifying units which are connected to each other in series or parallel and amplify the blocked signal in the second low frequency blocking unit(190) to have an opposite characteristic to a nonlinear characteristic. An output matching unit(150) matches and outputs the signal amplified in the second signal amplifying unit(200).
Patent KR-20070009137-A (KR)
Title: Periosteal elevator
Inventor: HWANG YOUNG HO
IPC: A61B17/00
Filed: 2005-07-15
Abstract: A periosteal elevator for a nose plastic operation is provided to minimize a damage of a nose tissue and reduce an operation time by marking a scale on a connection unit between a grasping unit and an operation front unit at a regular distance, and enabling an operating surgeon to recognize a depth of desquamation. A periosteal elevator for a nose plastic operation includes a grasping unit(10), a connection unit(20), and an operation front unit(30). The grasping unit(10) is grasped by an operating surgeon. The operation front unit(30) is integrated with the grasping unit(10) by the connection unit(20). A maximum width of an end part is 7-9 mm if the operation front unit(30) gets wider along the end part. A scale(21) is marked on the connection unit(20) at a regular distance.
Patent KR-20050091633-A (KR)
Inventor: OH YOUNG KYO
IPC: B29C41/08
Filed: 2005-07-18
Abstract: 본 발명은 주로 매설 관로에 사용되는 강관 외면을 부식으로부터 보호하기 위하여 분말 형상의 폴리에틸렌을 분말 용착식(일명 분체식)으로 피복 하는 기술에 대한 것으로서, 폴리에틸렌 분말의 접착성을 높이기 위하여 블라스팅 처리 후 적절한 온도로 가열한 강관 표면에 1차로 분체 에폭시를 도장하고 2차로 접착층 분체 폴리에틸렌을 피복 한 다음 최종으로 방식층 분체 폴리에틸렌을 피복 하는 3층 피복 구조를 갖는 제품을 제조함에 있어 각 피복 층의 피복 작업을 고르게 함으로서 방식 피복의 품질을 제고하고 생산성을 향상시키기 위한 것이다.  
     본 발명을 적용하여 제조한 피복 강관은 주로 상수도용 및 일반용수용 강관 및 기타 배관용으로서 지하 매설되는 관로의 용도로 사용될 수 있다.
Patent KR-20070013811-A (KR)
Title: Drum type washing machine
Inventor: CHOI DONG HYUN
IPC: D06F37/10
Filed: 2005-07-27
Abstract: A drum-type washing machine is provided to simplify a structure of a detergent supply device and facilitate the feed of a detergent by integrally combining a detergent containing unit with a transparent member in a door. A drum-type washing machine comprises: a body(10) having an opening(13); a door(30) for opening and closing the opening of the body, and having transparent members(32,33) allowing a user to watch the inside of the body; a detergent containing unit(40) mounted at the transparent member of the door; a water tank(11) installed in the body; a rotary drum(12) mounted in the water tank; and a water supply device(14a,14b) bringing water to the detergent containing unit. The detergent containing unit has an outlet(41) guiding water to the inside of the rotary drum. The transparent member and the detergent containing unit are integrally formed.
Patent KR-20070016000-A (KR)
IPC: G02B5/18
Filed: 2005-08-02
Abstract: ＰＳＦ를 이용하여 이미지를 처리하는 광학 시스템 및 이미지 처리방법이 제공된다. 
     본 발명에 의한 광학 시스템은, 적어도 하나의 렌즈; 상기 렌즈에서 결상된 이미지를 감지하는 이미지 센서; 및 상기 이미지 센서에서 감지된 이미지를 포인트 스프레드 함수(point spread function, 이하 'PSF'라 함)를 이용하여 복원 처리하는 이미지 처리 장치; 를 포함하며, 상기 렌즈들 중 상측에서 가장 가까운 렌즈의 굴절면과 상기 이미지 센서 사이의 거리로 정의되는 후초점거리(back focal length, BFL)는 다음의 수학식으로 정의되는 △PSF가 100% 이하의 값을 갖도록 조정된다. 
     [수학식]  
     
       
     
     이와 같은 본 발명에 의하면 PSF를 이용하여 이미지를 복원함으로써 넓은 물체거리에 대하여 우수한 이미지를 구현할 수 있다는 효과가 있게 된다. 
       
     후초점거리, 플랜지 백, 이미지 처리, 가상 초점, 고정초점, PSF, 접사
Patent KR-20070018442-A (KR)
IPC: G05B13/02
Filed: 2005-08-10
Abstract: 본 발명은 STPI 제어기를 사용하는 전동기의 속도 제어 시스템으로서, PI 제어기와 신경회로망(NN)을 병렬 연결하여 이루어지고 상기 전동기에 대한 지령속도( )와 실제속도( )의 오차를 입력받아 상기 전동기의 속도 제어에 필요한 토크성분의 지령전류( )를 출력하는 STPI 제어기와, 상기 전동기로부터 상기 실제속도( )를 측정하는 속도측정기와 상기 토크성분 지령전류( ) 및 자속성분 지령전류( )와 상기 전동기의 회전자위치( )를 입력받아 상전압 지령치( )를 출력하는 전류제어기와, 상기 상전압 지령치( )를 입력받아 상기 전동기를 구동하는 공간벡터 PWM 인버터를 포함한다. 따라서 전동기 시스템의 비선형 특성에 적절하게 대응할 수 있으므로, 파라미터 변동과 같은 시스템 변화에 강인성과 고성능을 유지할 수 있다. 
       
     영구자석형 동기전동기, 인버터, 신경회로망, PI 제어기, STPI 제어기
Patent KR-20070020721-A (KR)
IPC: G11B20/10
Filed: 2005-08-16
Abstract: 본 발명은 사용자 입력을 위해 화면상에 표시되는 버튼이 선택될 수 있도록 마련된 메뉴 정보로 이루어지는 메뉴 스트림 데이터를 포함하고, 메뉴 스트림 데이터는 버튼에 대한 사용자 조작을 결정하는 사용자 조작 정보(UOP(User Operation) 정보)를 포함하여, 사용자 및/또는 제작자의 의도에 따라 버튼 선택UOP 및 선택 버튼 실행UOP 중 결정된 하나의 UOP를 실행시킬 수 있다. 
       
     버튼 넘버, UOP, 저장매체, 네비게이션 명령어, 레지스터
Patent KR-20070027117-A (KR)
Title: Recovery method of chromium(vi) from chromium containing waste water
Inventor: LEE SUEG GEUN
IPC: C22B34/32
Filed: 2005-08-29
Abstract: A method for optionally removing hexavalent chromium(Cr(VI)) only from a chromium-containing waste solution or recycling the removed hexavalent chromium(Cr(VI)) is provided to prevent secondary pollution due to use of chemicals such as a reducing agent and solve problems such as excessive treatment time and manpower due to re-treatment of the chemicals. A method for modifying a surface of aluminum oxide comprises the steps of: mixing a mixed solution in which a mass ratio of aluminum chloride, aluminum nitride and aluminum sulfide is 0.05 to 1:0.5 to 3:0.01 to 0.3, and of which the total salt concentration is 0.1 to 5 (w/v)% with aluminum oxide in a mass ratio of 100 to 300:10 to 100; and drying the aluminum oxide at a temperature of 50 to 250 deg.C for 1 to 5 hours. A method for separating hexavalent chromium(Cr(VI)) from a chromium-containing waste solution comprises the steps of: mixing the surface-modified aluminum oxide with the chromium-containing waste solution to adsorb hexavalent chromium(Cr(VI)) onto the surface-modified aluminum oxide; and adjusting a pH of the hexavalent chromium adsorbed aluminum oxide to 2 or less using an acid solution to desorb hexavalent chromium(Cr(VI)) from the aluminum oxide.
Patent KR-20070027876-A (KR)
Title: Tube interlocking structure and method for tubular roof type tunnel construction
Inventor: LEE BYEONG TAEK
IPC: E21D11/00
Filed: 2005-08-30
Abstract: A method of constructing a steel pipe when drying a tunnel and a construction structure thereof are provided to prevent the soil from dropping and water from being leaked between the steel pipes by continually combining the pipes. A structure for constructing a steel pipe(1) when drying a tunnel comprises an opening longitudinally formed at the body; a receiving member shaped like a Ý-shaped section and welded at the area containing the opening in the body; and a lock member shaped like a T-shaped section and welded at the opposed side of the opening out of the body. The adjacent pipe near to the steel pipe is formed with a grouting part(20) grouted in the receiving member by fitting the lock member in the receiving member by passing the opening. A reinforcing member is installed at the front end of the lock member, and the receiving member is pre-mounted with a grouting nipple(18).