A Convenient Storage Rack for Graduated Cylinders
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA Convenient Storage Rack for Graduated CylindersBrian Love View Author Information Department of Chemistry, East Carolina University, Greenville, NC 27858Cite this: J. Chem. Educ. 2004, 81, 5, 701Publication Date (Web):May 1, 2004Publication History Received3 August 2009Published online1 May 2004Published inissue 1 May 2004https://pubs.acs.org/doi/10.1021/ed081p701https://doi.org/10.1021/ed081p701research-articleACS PublicationsRequest reuse permissionsArticle Views193Altmetric-Citations1LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-AlertsAs a plating method for precision parts, the rack loading method in which the workpiece is placed on the rack is often used. In many plating factories that use the rack loading method, workers perform the loading task manually. Existing model-based rack-loading labor-saving systems that utilize simulation results need to be recalculated every time the shape or position of a workpiece or rack changes. For this reason, it takes a lot of time and effort to change the setups. Achieving the rack-loading task that requires less setup changes, we assumed the rack loading task as a non-contact inverse peg-in-hole problem. In this study, we constructed a rack loading system which recognizes the pin position on the rack side and the hole position on the workpiece side without any contacts.
Plating (geology)
Position (finance)
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The performances of pallet rack were studied with experiments.The influence of structure,rack width,and time on shelve on pallet rack performances was analyzed and discussed based on experiment results.The methods and directions to improve the performances of pallet rack were put forward.The purpose was to provide reference for selection of pallet rack.
Pallet
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By integrating with the function of Pro/E and according the top-down physical designing ideas,this paper analyzed the characteristics of the major components of Sub-rack such as panels,boxes and other accessories.Then it realized the automatic physical design of sub-rack by layout,skel_model,3D solid model and the top-down method of Pro/E,which increase the designing properties and improve the designing efficiency and the quality of sub-rack.
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In the present design,the analysis criterion on trash、rack resonance refers to a single rack according to Levin formula, but it is not completely right. This paper demonstrates that the frequence of a single rack is related to the effect of surrounding racks and the generalized characteristic equation for calculating the frequence of single rack in consideration of the influence of the whole trash、rack is deduced and the mechanism of this influence is explained. At last, a revised Levin formula is given.
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Logix rack has its unique parameters apart from the basic parameters shared by involute rack.The influences of Logix rack profile parameters on tooth profile,along with the selection of these parameters,are discussed in this paper.
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Aimed at rack contact measurement,a method of small-module rack measurement based on machine vision is proposed.A machine vision measurement system is established.The system controls the movement of the rack with the grating,while the CCD is taking photos of the rack to realize the measurement for the whole rack.The images is analyzed by Matlab,and the edge of the rack is obtained.The basic parameters of the rack such as p and s,assessment of parameters related to the rack is calculated.The experiment turns out that the precision of this method can meet the requirements for the measurement of such rack,providing technical support for the rack online testing.
Machine Vision
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랙크식 창고 내에는 화재하중이 높은 물품이 수직으로 조밀하게 적재되어 있어 창고의 내부에서 화재가 발생되는 경우 현재의 스프링클러설비에 의해 유효하게 소화되기 어렵다. 이에 본 연구에서는 실물 규모의 랙크 구조물을 구축하고, 구조물 내부의 스프링클러헤드 종류 및 배치에 따른 화재실험을 통해 스프링클러설비에 의한 소화유효성을 확인하였다. 본 연구를 통하여 랙크식 창고의 내부의 화재를 유효하게 진압하기 위해서는 방수량 115 LPM 이상의 스프링클러헤드를 사용해야 하며, 동 스프링클러헤드를 높이 기준이 아닌 랙크 각 단마다 설치해야하고, 각 단의 가연물더미의 대각선 모서리 위치에 설치될 필요가 있다는 것을 알 수 있었다.In rack-type warehouses, it is difficult to extinguish fires effectively using sprinkler systems because high fire load commodities are stacked vertically and densely. In this study, an actual size rack structure was constructed and the effectiveness of the fire extinguished by the sprinkler system was confirmed through fire tests according to the type and arrangement of the sprinkler head in the rack structure. Through this study, to effectively suppress fires in rack-type warehouses, it is necessary to use sprinkler heads with a volume of more than 115 LPM and sprinkler heads need to be installed at the diagonal corner positions of the commodities of each rack.
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To meet the need of special drilling operation in 2,000 m-below directional wells,horizontal wells and sidetracking wells,the fully hydraulic gear and rack drilling rig was developed.The electric control system of the rig adopts the field bus control technology,achieving the purpose of using the PLC to control and monitor the rig's main parts.The hydraulic system adopts the electrohydraulic closed-loop proportion technology as the basis to achieve the monitoring of the hydraulic pump and motor and complete the lifting,lowering and rotating functions of the power head.The rig is also provided with the pipe handling system to catch the drill pipe from the pipe rack and send it to the wellhead.The rig has such advantages as compact structure,good mobility,reliable operation and low costs.It has bright market prospects.
Wellhead
Drilling rig
Drill pipe
Directional Drilling
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA Convenient Storage Rack for Graduated CylindersBrian Love View Author Information Department of Chemistry, East Carolina University, Greenville, NC 27858Cite this: J. Chem. Educ. 2004, 81, 5, 701Publication Date (Web):May 1, 2004Publication History Received3 August 2009Published online1 May 2004Published inissue 1 May 2004https://pubs.acs.org/doi/10.1021/ed081p701https://doi.org/10.1021/ed081p701research-articleACS PublicationsRequest reuse permissionsArticle Views193Altmetric-Citations1LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
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