Kowa Company Limited

Nippon Steel Corporation

Nippon Steel Sumitomo Metal Corporation

Other

Exxonmobil Upstream Research Company

Tohoku University

Shinshu University

Ichikawa, Kazuo

Takuya Hara

Hitoshi Asahi

Yoshio Terada

Tatsuya Yoshida

Hiroshi Abe

Tetsuya Ishikawa

Akira Hashimoto

Hiroshi Tamehiro

Satoshi Shimada

Narasimha-Rao Venkata Bangaru

Jayoung Koo

Yasuhiro Shinohara

Michael J Luton

Shinya Sakamoto

Clifford W Petersen

Akira Kawakami

Eiji Tsuru

Yoshikatsu Suzumura

Seiichi Sato

Hiroshi Morimoto

Tatsuo Yokoi

Takahiro Ito

Osamu Yoshida

Katsumi Yabusaki

Masanori Minagawa

Kensuke Nagai

Akihiko Takahashi

Ryuji Uemori

Takeshi Kinoshita

Taishi Fujishiro

Masaharu Mizuochi

Shunji Takemura

Kazunori Matsumura

Hiroyuki Ogawa

Toru Nakazawa

Junya Tagashira

Toshiharu Arai

Taro Muraki

Naoki Kambe

Atsushi Kakuuchi

Kazuo Ichikawa

Shigeru Ohkita

Yoshiharu Miyake

Kiyoshi Tanaka

Naoki Saito

Kazuaki Tanaka

Kunio Koyama

Itsuroh Hiroshige

Tatsuya Fujii

Hajime Ishikawa

Yuka Sugiura

Kouichi Shinada

Takafumi Sebayashi

Hideki Miyazaki

Yoshiki Tanaka

Masaaki Sugiyama

Asahi Hitoshi

Naoki Doi

Eiichi Yamashita

Nozomu Abe

Kiyoshi Ebihara

Kazuteru Tsutsui

Go Suzuki

Naoshi Ayukawa

Yutaka Hattori

Izuru Minato

In examining a patient for progression of glaucoma, a perimeter capable of appropriately assessing visual field progression in a short period of time, therefore lessening the physical burden of testing on the examinee.

Perimeter for testing for progression of Glaucoma

In a perimetry to be conducted, designating an inspection region through a region designator, a perimeter is configured to set a required time of the perimetry (upper limit time) through an upper limit condition setter and to determine total number or positions of stimulus presentation spots based upon the upper limit time. In such a configuration, an examinee knows the time to finish the inspection, and is able to highly keep his (her) concentration in comparison with a case where the required time is not known, thereby improving precision of the inspection.

Perimeter

Through the present invention, a perimetry result is obtained for a position on a retina surface designated as a position to be tested. As illustrated in the drawing, 'the position of a ganglion cell (RGC)' and 'the position of a photoreceptor cell (C) for sending information to the ganglion cell (RGC)' are offset on the retina surface (macular part). Here, when position (P) is designated as a test position for testing the functioning of a ganglion cell at position (P), the perimeter of the present invention finds &#x201c;the position (P) of the photoreceptor cell for sending information to the ganglion cell at position (P),&#x201d; presents a visual target at position (P) rather than position (P), and tests a visual field. The information of the visual target is sent to the ganglion cell at position (P), and the functioning of the ganglion cell can therefore be tested. The test result is correlated with the position (P) and displayed, and the ganglion cell at the designated position (P) can be therefore be tested.

In a perimetry to be conducted, designating an inspection region through a region designator, stimuli are presented to regions separated in an up/down direction, an oblique direction and a right/left direction from the inspection region ('the spaced region') in addition to the designated inspection region. At the result, examinees are not able to predict to which of both regions, the inspection region and the spaced region the stimuli are presented, thereby obtaining correct inspection results that do not receive a prediction of the examinees.

Electric resistance welded steel pipe excellent in deformability and fatigue properties after quenching which enables working into complicated shapes without spheroidization and which improves the fatigue properties after cold working and quenching without carburization are provided. The electric resistance welded steel pipe is characterized by containing, by mass %, C: 0.15 to 0.55%, Si: 0.01 to 0.30%, Mn: 0.5 to 1.5%, Ca: 0.0010 to 0.0030%, S: 0.0005 to 0.0050%, and O: 0.0005 to 0.0050%, having contents of Ca, O, and S satisfying 0.10&#x2266;[Ca](1&#x2212;124[O])/1.25[S]&#x2266;2.50, having Ca-based inclusions present at the base material and electric resistance weld zone with an average particle size of 1.0 to 10 &#x3bc;m and a density of 3 to 300/mm, and having a difference &#x394;Hv of the maximum hardness of the electric resistance weld zone and the average hardness of the base material part satisfying 100 to 500.

Electric resistance welded steel pipe excellent in deformability and fatigue properties after quenching

The present invention provides high strength steel pipe for line pipe superior in low temperature toughness suppressed in drop of toughness of the HAZ and a method of production of the same, more particularly high strength steel plate for line pipe used as a material for high strength steel pipe for line pipe and a method of production of the same, in particular high strength steel pipe for line pipe superior in low temperature toughness characterized in that the chemical compositions of the base metal is, by mass %, C: 0.020 to 0.080%, Si: 0.01 to 0.50%, Mo: 0.01 to 0.15%, Al: 0.0005 to 0.030%, and Nb: 0.0001 to 0.030% contained in a range of C+0.25Si+0.1Mo+Al+Nb: 0.100% or less and the mixture of austenite and martensite present along prior austenite grain boundaries of the reheated part of the heat affected zone has a width of 10 &#x3bc;m or less and a length of 50 &#x3bc;m or less.

High strength steel pipe for line pipe superior in low temperature toughness and high strength steel plate for line pipe and methods of production of the same

A perimeterfor measuring a visual field by conducting perimetry operations regarding measurement points RG of the subject eyehas meansfor storing perimetry result, meansfor composing the perimetry result as a map image corresponding to a fundus and indicating it on the display, meansfor obtaining and indicating a structure examination image PCof the subject eye, meansfor superimposing the map image MAPon the indicated structure examination image PCand indicating the superimposed as a composite image PC, and meansfor setting a concerned area NA on the composite image PC, and meansfor computing an evaluation value of the perimetry based upon the perimetry result.

A color perception test has a color matching processor that executes a color matching processing on a color monitor, and an image display controller that displays two or more images for color perception test in order on the color monitor on which the color matching processing was done. When displaying each image for color perception test, a color perception test is done in a state that one of its hue, brightness, saturation and display time is changed and the other elements are fixed. Since the color perception tester has the color matching processor, colors of the image are not changed with passage of time different from color printed one, and correct test can be done thereby. If the test is periodically done on some examinee, a degree of decreasing color perception function by aging can be exactly known.

Color perception tester, control program and method of controlling color perception tester

[Problem] To increase, compared to conventional devices, the range of motion of the light emitter (fixation lamp) in an external fixation lamp for an ophthalmological instrument and allow movement of the light emitter to arbitrary positions. [Solution] The fixation lamp () has a first arm (A), which supports a light emitter () and is supported by a second arm (A) via a first joint (C), and is configured so that the first arm (A) is able to revolve around at least two axes of revolution (E, E) by means of the first joint (C) and said axes of rotation (E, E) are not disposed on the same line. Thereby, the range in which the light emitter () can be moved can be increased compared to conventional devices and the light emitter can be moved to an arbitrary position in an arbitrary direction.

Fixation lamp for ophthalmological instruments

The present invention provides a hot coil for line pipe use which can reduce deviation in ordinary temperature strength and improve low temperature toughness despite the numerous restrictions in production conditions due to the coiling step and provides a method of production of the same, specifically makes the steel plate stop for a predetermined time between rolling passes in the recrystallization temperature range and performs cooling by two stages after hot rolling so as to thereby make the steel structure at the center part of plate thickness and effective crystal grain size of 3 to 10 &#x3bc;m, make the total of the area ratios of bainite and acicular ferrite 60 to 99%, and make the absolute value of A-B 0 to 30% when the totals of the area ratios of bainite and acicular ferrite at any two portions are designated as respectively A and B.

Method of production of hot coil for line pipe

A high-strength welded steel pipe is obtained by welding a seam weld portion of a steel plate that are formed in a pipe shape. In the high-strength welded steel pipe, a base metal of the steel plate includes, by mass %, C: 0.010% to 0.080%, Si: 0.01% to 0.50%, Mn: 0.50% to 2.00%, S: 0.0001% to 0.0050%, Ti: 0.003% to 0.030%, Mo: 0.05% to 1.00%, B: 0.0003% to 0.0100%, O: 0.0001% to 0.0080%, N: 0.006% to 0.0118%, P: limited to 0.050% or less, Al: limited to 0.008% or less, and the balance of Fe and inevitable impurities, Ceq is 0.30 to 0.53, Pcm is 0.10 to 0.20, [N]&#x2212;[Ti]/3.4 is less than 0.003, the average grain size of the prior &#x3b3; grains in heat affected zones in the steel plate is 250 &#x3bc;m or less, and the prior &#x3b3; grains include bainite and intragranular bainite.

High-strength welded steel pipe and method for producing the same

The present invention provides a thick welded steel pipe excellent in low temperature toughness in which contents of Mn and Mo satisfy (Expression 1) below, Pcm obtained by (Expression 2) below is 0.16 to 0.19, and a metal structure of a base material steel plate consists of ferrite being 30 to 95% in an area ratio and a low temperature transformation structure, and in a metal structure of a coarse-grained HAZ, an area ratio of grain boundary ferrite is 1.5% or more, the total area ratio of the grain boundary ferrite and intragranular ferrite is not less than 11% nor more than 90%, an area ratio of MA is 10% or less, and its balance is composed of bainite.1.2325&#x2266;(0.85&#xd7;[Mn]&#x2212;[Mo])&#x2266;1.5215&#x2003;&#x2003;(Expression 1)andPcm=[C]+[Si]/30+([Mn]+[Cu]+[Cr])/20+[Ni]/60+[Mo]/15+[V]/10&#x2003;&#x2003;(Expression 2).

Thick welded steel pipe excellent in low temperature toughness, manufacturing method of thick welded steel pipe excellent in low temperature toughness, and steel plate for manufacturing thick welded steel pipe

A perimeter according to the invention has fixation state detecting means for detecting a fixation state of an examinee in association with each portion where a stimulus should be presented, and necessity of retest is judged for each stimulus. Even if no good fixation state is detected for some stimulus, it is sufficient to retest the portion where the stimulus was presented. Then, burdens on the examinee or an examiner are lighter and the test time is shorter, and test efficiency is increased thereby.

Perimeter and method of controlling perimeter

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Tokyo, Japan

Takuya Hara