http://nopr.niscpr.res.in/handle/123456789/32576 2026-10-08T23:19:17Z http://nopr.niscpr.res.in/handle/123456789/32856 Title: Estimation of Minimum Fibre Length Contributing to Tenacity of Rotor-spun Yarns Authors: Salhotra, K R; Balasubramanian, P Abstract: <span style="font-size:11.0pt;line-height:115%; font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:"times="" roman";mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">The minimum fibre length which contributes to the tenacity of rotor-spun yarns was estimated as a function of twist density by using different fibre bundle-strength parameters, viz. <i><span style="font-size:11.0pt;line-height:115%;font-family:" calibri","sans-serif";="" mso-ascii-theme-font:minor-latin;mso-fareast-font-family:"times="" new="" roman";="" mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:minor-latin;="" mso-bidi-font-family:arial;mso-ansi-language:en-us;mso-fareast-language:en-us;="" mso-bidi-language:ar-sa"="">S</span></i>_{<span style="font-size:11.0pt; line-height:115%;font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;="" mso-fareast-font-family:"times="" new="" roman";mso-fareast-theme-font:minor-fareast;="" mso-hansi-theme-font:minor-latin;mso-bidi-font-family:arial;mso-ansi-language:="" en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">0</span>}<span style="font-size:11.0pt;line-height:115%;font-family:" calibri","sans-serif";="" mso-ascii-theme-font:minor-latin;mso-fareast-font-family:"times="" new="" roman";="" mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:minor-latin;="" mso-bidi-font-family:arial;mso-ansi-language:en-us;mso-fareast-language:en-us;="" mso-bidi-language:ar-sa"=""> <span style="font-size:11.0pt;line-height: 115%;font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;="" mso-fareast-font-family:"times="" new="" roman";mso-fareast-theme-font:minor-fareast;="" mso-hansi-theme-font:minor-latin;mso-bidi-font-family:"times="" roman";="" mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">(at zero gauge), <i>S</span></i>_{<span style="font-size:11.0pt; line-height:115%;font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;="" mso-fareast-font-family:"times="" new="" roman";mso-fareast-theme-font:minor-fareast;="" mso-hansi-theme-font:minor-latin;mso-bidi-font-family:arial;mso-ansi-language:="" en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">1</span>}<span style="font-size:11.0pt;line-height:115%;font-family:" calibri","sans-serif";="" mso-ascii-theme-font:minor-latin;mso-fareast-font-family:"times="" new="" roman";="" mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:minor-latin;="" mso-bidi-font-family:arial;mso-ansi-language:en-us;mso-fareast-language:en-us;="" mso-bidi-language:ar-sa"=""> <span style="font-size:11.0pt;line-height: 115%;font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;="" mso-fareast-font-family:"times="" new="" roman";mso-fareast-theme-font:minor-fareast;="" mso-hansi-theme-font:minor-latin;mso-bidi-font-family:"times="" roman";="" mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">(at 1/8 in. gauge), and <img src='http://www.niscair.res.in/jinfo/root1.gif' border=0>. The minimum fibre length depended on the fibre strength parameter and decreased with increase in the twist density of yarn.</span></span></span></span></span> Page(s): 11-14 1986-03-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/32848 Title: Physical Properties of Date-Palm Leaf Fibre Authors: Ghosh, S K; Saha, S C; Mojumder, P Abstract: <span style="font-size:11.0pt;line-height:115%; font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:"times="" roman";mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">The average fibre length tensile strength, fineness and cross-sectional features of the raw fibres of date-palm leaf were studied, The length, breadth, lumen size and length/breadth ratio of the ultimate fibres were determined. Crimp frequency and crimp per cent of alkali-treated fibres were also determined. The ultimate fibres were of higher length but of lower breadth than those of high-quality jute fibres. The length/breadth ratio also was much higher than that of high-quality jute fibre.</span> Page(s): 52-53 1986-03-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/32847 Title: Co(II), Ni(II) and Cu(II) Complexes with 3-Arylazo-1,2,4-triazole Dyes Authors: Caber, M; Hassanein, M; Ahmed, H A Abstract: <span style="font-size:11.0pt;line-height:115%; font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:"times="" roman";mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">The chelates of Co(II), Nu(II) and Cu(II) with some 3-arylazo-1,2,4-triazole dyes were investigated by conductometric titration and by IR, electronic and ESR spectra. The formation of 1:1 and 1:2 (metal:ligand) complexes was established by elemental analysis and Conductometric titrations.</span> Page(s): 48-51 1986-03-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/32846 Title: Synthesis of Azodisperse Dyes with Pyridine Ring for Dyeing Polyester Fibres Authors: Fadda, A A; Youssef, M M; Darwish, Y M; El-Housini, A M Abstract: <span style="font-size:11.0pt;line-height:115%; font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:"times="" roman";mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">Nine arylazo derivatives of 2-(acetoacetamido) pyridine have been prepared for use as dyestuffs. The effect of the nature and orientation of substituents in the diazonium component on the colour of azodyes is discussed. The dyeing performance of the dyes on polyester fibres has been assessed.</span> Page(s): 44-47 1986-03-01T00:00:00Z