Test and analysis of the porosity of cotton fiber assembly

Porosity is one of the most important properties of textile materials that ensures their comfort and usability. The internal pore structure of the cotton fiber assembly is complex and changeable, surface pore is difficult to explain its pore structure. It is intended to develop a method to predict the pore morphology of cotton fiber assembly. Pore image of the multi-layer fiber assembly is collected by a fiber photography instrument, used the Image Pro Plus 6.0 software to analyze, and obtained the white area indicators of image which can be applied to describe void space of fiber assembly. Using multiple linear regression analysis method, the regression equation of the white area index of image and porosity index of cotton fiber assembly is established. The results indicate that the white area index can largely be explained by three pore index namely the porosity ε, mean length of fiber between the adjacent contacts B and fiber tortuosity coefficient. Appropriate regression equations can be formulated for the pore of white area index which can aid in predicting the pore texture. Comparing the data indicators, it is found that mean length of fiber between the adjacent contacts B and the porosity ε, fiber tortuosity coefficient τ, and air permeability q have good linear correlation.

Coating factors influencing the fold cracking of coated papers

With the increasing popularity of coated paper, it has been more widely used in printing, publishing, product packaging and commercial promotion. However, coated paper is prone to cracks after printing and folding which exposes to a white area which is referred to as fold cracking. This study investigated the coating properties of paper and coating factors influencing the fold cracking and aimed to provide guidance on how to reduce the problems of fold cracking. This paper mainly discusses the effects of pigment proportion, binder dosage, solids content, coating thickness and calendering pressure on fold cracking of coated paper after printing. Experiments show that when the coating consisted entirely of calcium carbonate, the degree of fold cracking is most serious. With the addition of kaolin, the fold cracking reduces. When the ratio of the number of parts of calcium carbonate to kaolin is 25/75, the area of fold cracking reaches its minimum value of 10.28 %. With increasing solids content of the coating, the fold cracking decreases initially and then increases. When the solids content is 55 %, the fold cracking reaches a minimum. Increased latex content reduced coating thickness and an increase in calendering pressure gradually reduce the degree of fold cracking.

Sclera Segmentation techniques

Biometric Recognition is process which plays a vital role in many fields like security, authenticity, identification. The term biometric is the biological parts of humans which have a unique feature to isolate the individuals. Iris, fingerprint, palm, vascular pattern, voice, signature, face, DNA are the biometrics which are available in the world. Still there are few more biometric exist with unique feature like sclera, the white area of an eye. Blood vessels in sclera area have the unique pattern for every individual. In order to recognize the individuals features if sclera has also used but still how to isolate the feature from the eye image is a question mark. The challenge is the sclera has been surrounded by iris, eyelid and eyelash. Many procedures and methods has been introduced to segment the sclera form the eye but still the efficiency of the approaches has to be evaluated because segmentation accuracy will affect the recognition accuracy. The comparison has been tabulated and the analysis results are briefed in the result.

Down Time Analysis of Dry Toner Based Digital Printing

Digital is better than offset printing process as it imparts zero make-ready wastage. It also supports variable data printing advantages. Machine downtime of Konica Minolta C1085 and Richo pro 8100se digital press was analyzed in local market. The results indicated that white area on print matter, blank page, paper jam, paper curl, paper skew, wrinkle and creasing, print rub-off, miss feed, blur image, horizontal line, ink drop out, technical faults, custom paper, press room temperature, roller track, paper swing, paper moisture, registration, maintenance are the major issues contributed into downtime digital printing

DERMATOFIBROMA YANG DITERAPI DENGAN INJEKSI TRIAMSINOLON ASETONID INTRALESI

Dermatofibroma merupakan tumor jinak dengan predileksi pada tungkai bawah. Lesi dapat berupa papul atau nodul, soliter atau multipel, dan berwarna merah muda hingga kecoklatan. Dermatofibroma biasanya asimtomatis, meskipun beberapa lesi mungkin terasa gatal atau nyeri. Kelainan kulit ini terutama dibentuk oleh kolagen dan fibroblas yang tersusun tidak teratur. Dermatofibroma asimtomatis tidak memerlukan terapi. Namun, pada kasus simtomatis dan lesi yang sering mengalami trauma diperlukan terapi. Salah satu terapi dermatofibroma berupa injeksi steroid intralesi. Dilaporkan sebuah kasus dermatofibroma pada seorang laki-laki usia 39 tahun dengan keluhan kulit berupa nodul eritematosa yang kadang terasa gatal. Pemeriksaan dermoskopi, menunjukkan gambaran peripheral pigment network dan central white area, serta pemeriksaan histopatologis mendukung diagnosis dermatofibroma. Pasien diterapi dengan injeksi triamsinolon asetonid (TA) 10 mg/ml intralesi, perbaikan klinis mulai tampak satu minggu setelah terapi berupa lesi kulit menjadi lebih kecil dan hilangnya gatal. Setelah 7 minggu terapi, lesi kulit menjadi rata dan meninggalkan bercak hiperpigmentasi. Dermatofibroma simtomatis yang diterapi dengan injeksi TA intralesi memberikan hasil yang baik.Kata kunci: dermatofibroma, injeksi intralesi, kortikosteroid, triamsinolon asetonid

Shear-density coupling for a compressible single-component yield-stress fluid

Flow behavior of a single-component yield stress fluid is addressed on the hydrodynamic level. The figure shows the growth direction (arrows) and magnitude (color scale) of the most unstable mode. The white area corresponds to the stable regime.