Abstract: The present invention relates to bicyclic tetrahydrofuran derivatives of Formula (1) and a preparation method thereof, and particularly it relates to a process of preparing compounds of Formula (1) by performing an intramolecular cyclization of tetrahydrofuran-allenol derivatives in the presence of alcohol compound, transitional metal catalyst and carbon monoxide: wherein n is 1 or 2; R is phenyl optionally substituted with C1-C6 alkyl, C1-C6 alkoxy, hydroxyl or C1-C6 hydroxyalkyl group; and R1 is C1-C6 alkyl group.

Abstract: The present invention relates to bicyclic tetrahydrofuran lactone derivatives of Formula (1) and a preparation method thereof, and particularly it relates to a process of preparing compounds of Formula (1) by performing an intramolecular cyclization of tetrahydrofuran-allenic acid derivatives in the presence of a phenyl halide, a palladium catalyst and a base: wherein n is 1 or 2, and R is phenyl optionally substituted with C1–C6 alkyl, C1–C6 alkoxy, hydroxyl or C1–C6 hydroxyalkyl group.

Abstract: The present invention relates to a synthesis of a 7-membered carbocyclic compound having diexomethylene groups, more particularly to a synthesis of a 7-membered carbocyclic compound having diexomethylene groups, a novel compound having the structure represented by the following Chemical Formula 1, from trimethylsilanylmethyl-allenol derivative by the intramolecular Prins cyclization using Lewis acid. The 7-membered carbocyclic compound is a useful intermediate for synthesis of other multicyclic compounds. In Chemical Formula 1, R1 is a C1 to C6 alkyl group, and R2 and R3 is respectively a hydrogen atom, or R1, R2 and R3 may be connected with neighboring substituents to form a 5 to 10-membered aliphatic or aromatic ring.

Abstract: A compound represented by a general formula (Ia) or (Ib) and a stereo-selective preparation method thereof using a carbonyl reductase which is separated from Kluyveromyces marxianus. The compound can be prepared by reduction of substituted ?-keto ester and can be used as an intermediate in preparing ?-lactam group antibiotics.

Abstract: An image forming apparatus. The image forming apparatus includes a body of the image forming apparatus within which a developing part to develop an image on a print medium fed to the image forming apparatus is housed, a fixing unit installed within the body of the image forming apparatus to fix the image transferred to the print medium, a feeding unit to feed the print medium in such a way that a single side/both sides of a print medium is/are formed with an image/images while passing through the body of the image forming apparatus, a control unit to supply a voltage to the body of the image forming apparatus to control the body, the fixing unit, and the feeding unit of the image forming apparatus, and a cooling unit. The cooling unit is installed within the body of the image forming apparatus to cool the interior of the body of the image forming apparatus.

Abstract: Paste dispenser and method for controlling the same, the paste dispenser for dispensing a desired paste pattern on a substrate including a stage for detachably placing the substrate thereon, a nozzle having a paste discharge opening opposite to a main surface of the substrate placed on the stage, for discharging the paste on the substrate while making relative movement to the stage, and section measuring means for measuring a section of a paste pattern on the substrate in a stationary state without relative movement to the substrate.

Abstract: Provided are a method for preparing a granular animal feed additive and the granular animal feed additive prepared by the method. The method includes: filtering, with a membrane filter, a fermentation broth obtained from a lysine producing microorganism cultured in a lysine producing condition to obtain a lysine-containing filtrate and a microorganism-containing sludge; drying the filtrate to obtain a concentrate with a total solid content of 48 to 52 wt %; granule-drying the concentrate at a temperature of 50° C. to 60° C.

Abstract: Disclosed is a method for embedding a digital watermark on a wavelet lowest subband. The method including: setting a DC component region of a multi-stage wavelet-transformed original copy image to a watermark embedment region, and high-frequency filtering an original picture LLn of the embedment region; generating index information for designating a pixel position, and a watermark sequence to be embedded; calculating an embedment strength ? for each position of the watermark embedment region; in case the watermark sequence is sequentially embedded on an embedded position designated by the index information, mutually comparing the original picture LLn coefficient value for each embedded position with a mirror picture LLn? coefficient value, and then altering the original picture LLn coefficient value; and in case the original picture LLn coefficient value is differentiated above a predetermined value with reference to the corresponding embedment strength ?, skipping the watermark embedment for the position.

Abstract: The present invention relates to a synthesis of an 8-membered carbocyclic compound having diexomethylene groups, more particularly to a synthesis of an 8-membered carbocyclic compound having diexomethylene groups, a novel compound having the structure represented by the following Chemical Formula 1, from trimethylsilanylmethyl-allenol derivative by the intramolecular Prins cyclization using Lewis acid. The 8-membered carbocyclic compound is a useful intermediate for synthesis of other multicarbocyclic compounds. In Chemical Formula 1, R1 is a phenyl group, and R2 and R3 is a hydrogen atom, or R1, R2 and R3 may be connected with neighboring substituents to form a 5 to 10-membered aliphatic or aromatic ring.

Abstract: A paste dispenser and a method for controlling the same are disclosed. The paste dispenser includes a stage having a substrate mounted thereon, at least one nozzle dispensing a paste on the substrate by relative movement between the nozzle and the substrate, a measuring means provided at a position facing into an outlet of the nozzle and directly measuring a position of an exchange nozzle, and a controller converting a compensation value in accordance with a displacement of the exchange nozzle based on data measured by the measuring means.

Abstract: A chair equipped with a lumbar support unit is disclosed. The lumbar support unit includes a lumbar plate attached to a lower portion of a tiltable backrest part, and an actuating connector comprising a connecting wire which is connected at one end to an upper end of the lumbar plate and is connected at the other end to a chair frame supporting the seat and back parts, and a connecting tube surrounding the connecting wire, which is positioned at one end at a location downwardly spaced from the one end of the connecting wire, and is connected at the other end to a movable frame. The lumbar plate is automatically protruded forward to snugly support a lumbar region of a user when the back part is tilted rearwardly. The chair can afford convenient operation and protection of a lumbar region of a user.

Abstract: Provided herein are racemic or enantiomerically enriched benzoyl piperidine compounds and pharmaceutically useful salts thereof, pharmaceutical compositions comprising an effective amount of racemic or enantiomerically enriched benzoyl piperidine compounds to treat central nervous system diseases and methods of treating central nervous system diseases in a mammal, in particular psychoses and cognition disorders.

Abstract: A method of ejecting ink from a ink-jet printhead includes filling a rear end of a nozzle with ink using a capillary force, the rear end of the nozzle being surrounded by a hydrophilic layer, forming an electric field directed toward an outlet of the nozzle on a front end of the nozzle, the front end of the nozzle being surrounded by a hydrophobic layer, varying a surface tension of ink to separate ink droplets having a predetermined volume from ink and to move the separated ink droplets within the front end of the nozzle toward the outlet of the nozzle, and ejecting the separated ink droplets through the outlet of the nozzle.

Abstract: A methylidene oxazolidinone compound represented by formula (1) or a pharmaceutically acceptable salt thereof, and a preparation method thereof, showing superior antimicrobial activities against gram-positive germs including resistant strains such as methicillic-resistant staphylococcus aureus and vancomycin-resistant enterococcus: 1

Abstract: The present invention relates to isoxazolylalkylpiperazine derivatives having selective biological activity at dopamine D3 or D4 receptors represented by the following formula (1), and its preparation method through reductive amination reaction in the presence of reducing agent, wherein R1, R2, X and n are the same as defined in the specification.

Abstract: Provided herein are racemic or enantiomerically enriched benzoyl piperidine compounds and pharmaceutically useful salts thereof, pharmaceutical compositions comprising an effective amount of racemic or enantiomerically enriched benzoyl piperidine compounds to treat central nervous system diseases and methods of treating central nervous system diseases in a mammal, in particular psychoses and cognition disorders.

Abstract: The present invention relates to 4,5-dihydroisoxazolylalkylpiperazine derivatives having selective biological activity at dopamine D3 and D4 receptors represented by the following Formula (1), and its preparation method through reductive amination reaction in the presence of reducing agent, wherein R1, R2, X and n are the same as defined in the specification.

Abstract: A compound represented by a genera formula (Ia) or (Ib) and a stereo-selective preparation method thereof using a carbonyl reductase which is separated from Kluyveromyces marxianus. The compound can be prepared by reduction of substituted &bgr;-keto ester and can be used as an intermediate in preparing &bgr;-lactam group antibiotics.

Abstract: A chair equipped with a lumbar support unit is disclosed. The lumbar support unit includes a lumbar plate attached to a lower portion of a tiltable backrest part, and an actuating connector comprising a connecting wire which is connected at one end to an upper end of the lumbar plate and is connected at the other end to a chair frame supporting the seat and back parts, and a connecting tube surrounding the connecting wire, which is positioned at one end at a location downwardly spaced from the one end of the connecting wire, and is connected at the other end to a movable frame. The lumbar plate is automatically protruded forward to snugly support a lumbar region of a user when the back part is tilted rearwardly. The chair can afford convenient operation and protection of a lumbar region of a user.

Abstract: The present invention relates to a novel isoxazolylalkylpiperazine derivatives having selective biological activity at dopamine D3 or D4 receptors represented by the following formula (1), and its preparation method through reductive amination reaction in the presence of reducing agent, 1