Faults of Woven and Knit Fabric free essay sample

Faults of woven fabric: Bar: It is a band running across the full width of cloth. Pick bar due ti difference in pick spacing Tension-bar due to difference in weft tension Weft-bar due to difference in material count, twist etc Box marks: The causes of box marks are – Dirty box Shuttle riding over the weft Dirty shuttle Dirty picking and ticks Broken pattern: It occurs due to wrong drawing of threads insertion of thee pick, incorrect lifting of warp threads. Broken pick: A pick missing of the fabric, due to rough shuttle eyes, poor winding and weft yarn breakage. Defective selvedge: Curled selvedge Cut selvedges Loppy selvedges Slack selvedges Pulled selvedge Tight selvedge Uneven selvedge Float stitches: A place where warp and weft yarns escape the required interlacement. If occurs for improper warp stop motion. Fuzzy: it occurs for the present of hairy and abraded yarns. Hang pick: A pick which is out of line and is a triangular shape. We will write a custom essay sample on Faults of Woven and Knit Fabric or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Missing ends: Gap of warp yarns is the main causes Reed marks: Due to this fault cloth shows irregular spacing between groups of warp yarns across the fabric width. Shuttle marks: Width way marks due to abrasion of warp yarns by the shuttle. Stain: Major problems on woven fabric Oil, Dust, Soil, Carbon particles in the air may cause stains. Uneven cloth: It produced when take up motion is faulty, broken ratchet wheel is also responsible. Some mechanical faults: Reed marks Shuttle flying out Shuttle trapping Loom hanging Loom stopping Weft cutting Bumping Knitting Faults: Holes: Holes are the result of yarn breakage. It occurs for the following causes – Uneven yarn Badly set of yarn feeder Knots, slubs etc in yarn Yarn tension is too high Yarn is too dry Drop stitches: Those are the result of a defective needle. It also occurs when a yarn is not properly fed during stitch formation. Cloth fall –out: it is an area consisting of drop sitiches lying side by side. Snags: It occurs when filament yarns are processing. It occurs for higher twist and lesser crimp elasticity. Double stitches: These occur due to badly knitted or non-knitted loops. Vertical stripes: It is observed as longitudinal gaps in the fabric. When the space between Wales is irregular it occurs. Horizontal stripes: Horizontal stripes are caused by unevenness in the courses. Soil stripes: Soil stripes can appear both in the direction of Wales as well as courses. Color fly: Color fly consists of singe fibres, brunches of fibre of yarn pieces in varying colors. Distorted stitches: Due to it if become unsettled fabric and fabric appearance is skitter. Write about BAN (Barium Activity Number): Barium activity Number = (? Ba(OH)? _2 Absorbed by mercerised cotton material)/(? Ba(OH)? _2 Absorbed by unmercerised cotton material) BAN is always greater than 100 Standard range of BAN 115 – 135 Highly mercerized range 140 – 150 possible If BAN 115, Mercerization wille be uneven Write ablout Water Hardness: Hardness is a term applied to water denoting a measurement of its PH and metal salt contest. Classification of water according to hardness – DescriptionTotal hardness (Degree) Very soft 0 – 40 Soft 5 – 80 Shild 9-140 Fairly hard 15 -180 Hard 19 -300 Very hard 300 Determination of water hardness: The following Reagents are required for hardness measermet Buffer solution EDTA (Ethelene Diamine Tetraacetate ) (. 02 N or . 01 M) Indicator solution 0. 05 gm (Solochromo black WDFA) Mixture of alcohol and tri-ethanol amine Calcium solution – Take 1 gm CaCO3 and dried at 1650C Cover with clock glass and add water (50-100 ml) Add 20. 5 ml HCl Warm and next Cool Transfer to one litre volumetric flask Determination of total Hardness: Total Hardness = (T? 1000)/V mg/L CaCO3 Where, V = Wt. f solution (50 -100) into conical breaker T = Total amount of EDTA used to get reddish tinge disappear. Weight loss in Pre-treatment: The weight of unscoured and scoured were taken separately at the same moisture content and then weight loos is measured in %. Weight loss = (Wt. of Unscoured fabric-Wt. of Scoured fabric )/(Wt. of Unscoured fabric) ? 100% Standard range of Weight loss = 4 – 8% Fabric and knit: (Questions) Faults of woven and knit fabric. Different variables of woven fabric. BAN (Bariem activity number) Hardness measurement of H2O. Wt. loss in pre-treatment (Scouring, bleaching, desizing etc)

the forest people essays

the forest people essays In his book, The Forest People, Colin Turnbull achieves the taste and feel of life inside a Mbuti community, but in doing so offers a skewed anthropological look at the peoples of the African Congo. When reading the book, I did truly feel a part of the Mbuti world, but I also noticed a lack of anthropological accuracy when it came to portraying effect had on Pygmies by the lives and cultures of surrounding natives. Not only does Turnbull lack respect non-Pygmy culture, but he also doesn't much account for the possibility of change as he idealizes the Mbuti belief and living system in the state it currently exists. As illustrated quite early in the book when Cephu's daughter dies of dysentery, the Mbuti people copy some of the patterns of ritual grief used by their villager Negro neighbors. It is clear from their behavior that the Pygmies hold little stock in the cultural beliefs of the villagers, and play along simply to not upset the good food source they can use the Negroes as. How ever, the way that Turnbull portrays this relationship is extremely one-sided, often times not even giving the "Negroes" the dignity of a tribal name. His treatment of their beliefs is similar, and gives only the vaguest reasons for their behavior, citing belief in spirits and fear of the forest. Since Negro customs obviously affect pygmy behavior, it seems curious that Turnbull should come so close to completely ignoring cultural reasons driving it. Forces moving culture are much clearer and completely defined when Turnbull follows the pygmies into the forest and away from the influence of surrounding villages. Here, the ritual of the molimo is seen in its pure state, as are other rituals such as marriage and the elima. From the Mbuti (and therefore Turnbull's) point of view, it is there in the middle of the forest that everything is right with the world, and no polluting influence of the villagers or of change can approach them. However, this is a f...

Excutions Essay Example | Topics and Well Written Essays - 2000 words

Excutions - Essay Example Keeping in view this social condition, the sociologists try to explore crime, crime control and the administration of criminal justice from the point of social constructionism. They view 'crime' and 'criminals' a product of social and political interests and where besides other, the most dominating factor are class, race and gender. They also take into consideration the historical and contemporary practices of criminal justice which is shaped and experienced by the racial and ethnic minorities and majorities, the rich and poor and by men and women, so as to help us understand the numerous social realities of justice in the United States; as this essay will try to examine the pattern of execution based on race, gender and class. The study of social inequalities has always been the central focus of sociologists. They are not only interested in issues related to race/ethnicity, gender and class but also the intersections of these dimensions by employing a wide variety of methods from the ethnographic fieldwork and in-depth interviews to multilevel social and networks methods and statistical models. According to The ABA Kennedy Commission Report (June 23, 2004), the United States puts more people behind bars than any other country in the world and needs to eradicate the disproportionate impact 'tough on crime' laws it has for minorities. This is not because of higher criminal behavior among blacks, but because as compared to non-whites, they are more likely to be imprisoned especially as drug users. Though white drug dealers outnumber the black ones but 86.8% of those imprisoned for drug charges are blacks. In the 1980s, the media talked about drug-addicted mothers, perpetuating the racial stereotypes of African American women who trading sex for drugs rather than a white middle class woman snorting the more expensive cocaine powder. While the poor black pregnant women became targets of the criminal justice system, the middle and the upper class women escaped scrutiny of the criminal justice agents into the private facilities of detoxification. Similarly, most studies on crime take a narrow approach to the subject by treating a crime as simply a violation of legalized social norm that carries a penal sanction. The figure among black males was 3,405. Much of the history of sentencing reform both in capital and non-capital punishment has been influenced by implicit concerns about racial disparities and discriminatory decision making in the criminal justice system. In a study carried out to find whether the four delinquency theories, strain, social learning, low self-control and control theories could better explain juvenile offending in comparison to gender, race and class impact on delinquency. The findings suggested that the quantitative analysis is an effective tool for detecting intersectional differences resulting from gender, race and class to support feminist assertions that general theories are less universal than claimed by their proponents. Based on the unfair racial disparities in federal sentencing, a report released in 1984 by the United States Sentencing Commission confirmed, that the average federal prison sentence for black offenders was about five months longer than for whit es. By 2001, the average sentence