摘要 :
Copy and paste, or cut and paste, using a clipboard or paste buffer is the principal facility provided to users for transferring data between and within application software. This mechanism is clumsy to use where several pieces of...
展开
Copy and paste, or cut and paste, using a clipboard or paste buffer is the principal facility provided to users for transferring data between and within application software. This mechanism is clumsy to use where several pieces of information must be moved systematically, for example, when filling a form or building a table. We present an alternative, more natural user interface facility to make the task less onerous, and to provide improved visual feedback. Our mechanism -- the stretchable selection tool (SST) -- is a semi-transparent overlay augmenting the mouse pointer to automate paste operations and provide information to prompt the user.
收起
摘要 :
In the early 1970s PEX were being developed in order.to produce energetic compounds with a toothpaste-like consistency so that the PEX could be moved into position when arming the warhead. In the late 1990s development work was co...
展开
In the early 1970s PEX were being developed in order.to produce energetic compounds with a toothpaste-like consistency so that the PEX could be moved into position when arming the warhead. In the late 1990s development work was conducted on PEX for the filling of small-volume microdevices such as micro-actuators. More recently Cranfield University has just begun research into the development of SPEX. This review outlines the developments in high explosive pastes and concludes with future developments in PEX.
收起
摘要 :
The paste printing process accounts for the majority of assembly defects, and most defects originate from poor understanding of the effect of printing process parameters on the printing performance. As the current product miniatur...
展开
The paste printing process accounts for the majority of assembly defects, and most defects originate from poor understanding of the effect of printing process parameters on the printing performance. As the current product miniaturisation trend continues, area array type package solutions are now being designed into products. The assembly of these devices requires the printing of very small solder paste deposits. The printing of solder pastes through small stencil apertures typically results in stencil clogging and incomplete transfer of paste to the PCB pads. At the very narrow aperture sizes required for flip-chip applications, the paste rheology becomes crucial for consistent paste withdrawal. This is because, for smaller paste volumes, surface tension effects become dominant over viscous flow. Proper understanding of the effect of the key material, equipment and process parameters, and their interactions, is crucial for achieving high print yields. During the aperture filling and emptying sub-process, the solder paste experiences forces/stresses as it interacts with the stencil aperture walls and the pad surfaces, which directly impact the paste flow within the apertures. As the substrate and stencil separate, the frictional/adhesive force on the stencil walls competes directly with the adhesives/pull force on the PCB pads, often resulting in incomplete paste transfer or skipping/clogged apertures. In this paper, we investigate the effect of stencil design on the printing process and in particular the effect on paste transfer efficiency.
收起
摘要 :
Установлено, что оплодотворение коров наступает при титрах спермиоагглютинирующих антител в цер-викальной слизи и крови 1:32 и...
展开
Установлено, что оплодотворение коров наступает при титрах спермиоагглютинирующих антител в цер-викальной слизи и крови 1:32 и менее. Приболее высоких титрах (1:96-1:256) коровы не оплодотворяются, остаются бесплодными. Более высокие титры антител выявлены к сперме "основных" быков. Поэтому для повышения результативности искусственного осеменения яловых коров необходимо использовать сперму "заменяющих" быков с более низкими титрами антиспермальных антител.
收起
摘要 :
By appealing to the classical boundary-layer theory, the present paper investigates the effect of the freestream shear on the separation of the laminar boundary layer around a circular cylinder. It is shown that on the side of the...
展开
By appealing to the classical boundary-layer theory, the present paper investigates the effect of the freestream shear on the separation of the laminar boundary layer around a circular cylinder. It is shown that on the side of the cylinder with faster freestream velocity the location of the separation point (point of vanishing wall shear) is virtually unaffected by the freestream shear, while on the other side of the cylinder a critical shear rate is observed. Below this critical value, separation occurs typically at the rear surface of the cylinder and is found to shift towards the downstream direction with increasing freestream shear. Above the critical shear rate, the boundary layer separates from the windward side of the cylinder. Further increase of the freestream shear then causes the separation point to move towards the upstream direction. The present findings may have important implication on the issue regarding to the orientation of the lift force exerting on the cylinder. [References: 16]
收起
摘要 :
Tahin is generally produced by using hulled roasted sesame seeds,however Bozkir tahin is produced by using unhulled roasted sesame(natural)seeds Concentration of thirteen minerals(Al,Ca,B,Cu,Fe,K,Mg,Mn,Mo,Na,Ni,P and Zn)of tahin p...
展开
Tahin is generally produced by using hulled roasted sesame seeds,however Bozkir tahin is produced by using unhulled roasted sesame(natural)seeds Concentration of thirteen minerals(Al,Ca,B,Cu,Fe,K,Mg,Mn,Mo,Na,Ni,P and Zn)of tahin produced from hulled roasted sesame,Bozkir tahin produced from unhulled roasted sesame(with hulls)and their blends(25,50 and 75%)were determined by inductively coupled plasma optic emission spectrometry(ICP-OES).All samples contained high amounts of Ca,K,Fe,Mg,Na,P and Zn The highest mineral concentration for tahin samples and sesame seeds were measured between 0.16-3.74 mg/kg Al,2005.92-8794.09 mg/kg Ca,14.04-21 19 mg/kg B,15.39-33.67 mg/kg Cu,165 7-437.66 mg/kg Fe,4096.55-6876.06 mg/kg K,2020.97-2482.87 mg/kg Mg,12.56-21.31 mg/kg Mn,0 74-1.55 mg/kg Mo,605.81-2436.5 mg/kg Na,4.78-8.66 mg/kg Ni,5019.89-7627.85 mg/kg P and 41.28-52.85 mg/kg Zn.The concentration of minerals such as Al,Ca,B,Cu,Fe,K,Mg,Mn,Mo,Na,Ni,P and Zn in tahin increased with increasing of unhulled roasted sesame seeds levels,except for magnesium The magnesium contents decreased with increasing of levels of unhulled roasted sesame seeds.As a result,minerals such as Al,Ca,B,Cu,Fe,K,Mn,Mo,Na,Ni,P and Zn increased with increasing hulls content,but Mg content decreased.The increased in minerals with increasing levels of unhulled roasted sesame seeds in tahin can be explained by the increasing of peel(hulls)contents.Tahin,especially Bozkir tahin contain nutritient elements of vital importance in man's metabolism.
收起
摘要 :
Foam-mat drying of cowpea using glyceryl monostearate (GMS) and egg albumin (EG) as foaming agents was investigated. GMS and EG were incorporated into cowpea paste (22%, 25% and 28% total solids) at 2.5, 5.0, 7.5, 10.0, 12.5 and 1...
展开
Foam-mat drying of cowpea using glyceryl monostearate (GMS) and egg albumin (EG) as foaming agents was investigated. GMS and EG were incorporated into cowpea paste (22%, 25% and 28% total solids) at 2.5, 5.0, 7.5, 10.0, 12.5 and 15% (w/w), and whipped for 3, 6, 9, 12, 15, 18 and 21 min, maintaining 15, 25 and 35 degreesC foaming temperatures. Foam density was measured and expressed in g/cm(3). Cowpea foams were dried at 60 degreesC (Twb, wet bulb temperature 35 degreesC) for 48 min. Sensory attributes of akara produced from fresh and reconstituted pastes were evaluated.
收起
摘要 :
The effect of carbonation on the microstructure and flexural strength of hardened aluminous cement pastes has been investigated. It is found that pastes containing either C(3)AH(6)* or CAH(10) as the major crystalline hydrate phas...
展开
The effect of carbonation on the microstructure and flexural strength of hardened aluminous cement pastes has been investigated. It is found that pastes containing either C(3)AH(6)* or CAH(10) as the major crystalline hydrate phase are readily partially carbonated at a humidity of 72.6%. The carbonation products are calcite, vaterite, which is present as 50 nm crystallites, and hydrous alumina, which is always produced in the form of an amorphous gel. Partial carbonation produces a modest increase in the flexural strength for pastes containing either C(3)AH(6) or CAH(10). [References: 10]
收起
摘要 :
Right-wing populist parties and their supporters in Europe who are exposed to the ambiguities of the present are more likely to assemble their futures with a retrospective understanding, which essentializes the past, myths, and lo...
展开
Right-wing populist parties and their supporters in Europe who are exposed to the ambiguities of the present are more likely to assemble their futures with a retrospective understanding, which essentializes the past, myths, and local history, the repertoire of which is often very rich. Alternative for Germany (AfD) and Front National (FN) are two right-wing populist parties that successfully exploit the past in mainstreaming their political projects. The use of the past provides some disenfranchised individuals with a shield protecting them against the perils of globalisation. Today, the past is being used in different ways, ranging from abuses, lies, and vulgarization to political cultures of regret and sorrow, as in the exploitation of the dissonant past by the AfD, or to right-wing populist recreation of nationalisms and parochialisms, as in the revitalization of the myth of Jeanne D'Arc by the FN. Based on extensive desk research as well as a set of semi-structured interviews conducted with the supporters of the AfD and the FN in 2017 in Dresden (Germany) and Toulon (France), this article demonstrates how the AfD and the FN have utilized heritage populism to appeal to their supporters in remote places who experience socioeconomic, spatial and nostalgic deprivation.
收起
原文获取