Influence of Printing Technique and Printing Conditions on Prints Recycling Efficiency and Effluents Quality

The aim of this work was to determine the influence of the conventional offset printing technique and digital electrophotography printing with liquid toner (LEP) on some optical properties of recycled fibres. A series of LEP prints was made with the variation of the negative voltage of the developing drum (−200 V, −280 V, −350 V, and −430 V) after calibration of the machine and achieving standard densitometry values. Besides deinkability aspects, the quality of wastewater effluents after process of prints recycling was observed in order to make a conclusion regarding how different printing techniques, conditions in printing process, and different types of inks can affect the wastewater effluents. Results of image analysis showed that by increasing the negative voltage of developing drum in LEP printing technique, the formation of large ink particles on handsheet from recycled pulp increases. Depending on the size of the negative voltage of the developing drum, under the same experimental conditions, handsheets made from LEP recycled fibres have lower whiteness gain, brightness gain, and ΔERIC of handsheets compared to those made from the offset prints. In addition, a certain correlation was found between IEERIC (ink elimination), chemical oxygen demand (COD), and total organic carbon (TOC) of wastewater effluents after recycling of LEP prints and offset prints as well. Organic water pollution parameters (COD and TOC) showed higher values in wastewater after recycling of offset prints compared to recycling of LEP prints.

MONO PRINTING ON CONTEMPORARY WESTERN WEARS

English - Mono printing is the first printing technique used by younger people in Western countries to create a new surface for painting with the natural colors available and now to create textures on clothing as well. It has no history in India. The present research aims to gather more information about this printing technology and explore its future in the Indian modern fashion market. For this a collection of contemporary western casualwear was designed and developed. The responses of 100 adolescent girls as respondents were collected and analyzed for the awareness of this art form and its viability in the fashion market. The study revealed that the majority of the sample group were unaware of this printing technique, but found the design and application of this technology to be highly aesthetic in the quality garments developed. There is a good market potential for the fashion products made by this technology of printing. Hindi - मोनो प्रिंटिंग प्रथम प्रिंटिंग तकनीक है, जो पश्चिमी देषों में कम उम्र के लोगों द्वारा उपलब्ध प्राकृतिक रंगों के साथ पेंटिग के लिए नए प्रकार की सतह बनाने और अब कपड़ों पर भी बनावट बनाने के लिए उपयोग की जाती है। भारत में इसका कोई इतिहास नहीं है। वर्तमान अनुसंधान का उद्देश्य इस प्रिंटिंग तकनीक के बारे में अधिक जानकारी एकत्रित करना और भारतीय आधुनिक फैशन बाजार में इसके भविष्य का पता लगाना है। इस के लिए समकालिक पश्चिमी कैजुअलवियर परिधानों का संग्रह डिजाइन और विकसित किया गया। उत्तरदाताओं के रूप में १०० किशोरियों कीे प्रतिक्रियाओं को एकत्र कर उनमें इस कला की जागरूकता और फैशन बाजार में व्यवहार्यता का विश्लेषण किया गया । अध्ययन से पता चला है कि, सेम्पल समूह में अधिकांष प्रिंटिंग की इस तकनीक से अनभिज्ञ है, लेकिन विकसित गुणवत्तापूर्ण परिधानों की डिजाइन और उनपर इस तकनीक का उपयोग को उन्होंने अत्यधिक सौंदर्यात्मक पाया । प्रिंटिंग की इस तकनीक से तैयार फैशन उत्पादों के लिए बाजार में अच्छी संभावनाएं हैं।

Sustainable functional finishing for cotton fabrics using screen-printing process and gallotannin

To seek a more environmentally friendly textile finishing technique, the screen-printing method was adopted to apply functional material to cotton fabrics. In addition, gallotannin was used as a functional material because it is naturally abundant in many plant-derived substances and shows various health-promoting features such as antimicrobial, antioxidant, and other attractive properties. Therefore, a gallotannin/thickener paste was applied to the surface of cotton fabrics through the screen-printing technique, and the gallotannin-printed cotton fabrics were thoroughly investigated using scanning electron microscope (SEM), Fourier-transform infrared spectroscopy (FTIR), and other methods. The gallotannin printed area was substantially brown in appearance, and gallotannin moiety appeared to combine with cotton cellulose through heat treatment. Furthermore, functional properties of the gallotannin-printed cotton fabrics were examined in terms of antibacterial activity, deodorizing property, and ultraviolet-blocking property, of which it demonstrated excellent abilities. However, the antibacterial ability toward Gram-negative bacteria (K. pneumoniae) decreased as the laundry cycle increased.

A Review on: 3D Printed Orthopaedic Cast for Improved Forearm Fracture Rehabilitation

Forearm fracture has many management related problems. In order to regain its function anatomical reduction and immobility is very necessary. Traditional cast is not a satisfactory cast as it is heavy, poorly ventilated and often causes fracture related complications. The paper deals with application of 3D printing technique for suitable cast for forearm rehabilitation. Novel 3D printed cast is light weighted, ventilated, custom fit, strong and waterproof and substantial improvement over conventional orthopaedic cast. With the development in technology, it is expected that the cost of fabrication and its manufacturing time will be greatly reduced in the coming future. Keywords: bone fracture, immobility, rehabilitation, 3D printing, orthopaedic cast

EARTH'S CREATION STIMULUS: CREATION OF GRAPHIC ARTS WITH USED PLYWOOD MEDIA

Natural phenomena, especially climate change, are increasingly worrying lately. Graphic art can be used to express concern for the environment in response to climate change. The creation of this graphic art work uses the concept of the earth's creation stimulus. The creative methods used include: experimentation, contemplation, and formation. Abstract Expressionism was chosen as the style of personal expression in the creation of this work. The creative technique used is high printing technique with used plywood media. The results of the creation process show that the visualization of the concept of the earth's creative stimulus produces the forms of circles and lines. These forms are the main motif in the creation of graphic art with the stimulation of this earth's creativity

Microcontact Printing of Cholinergic Neurons in Organotypic Brain Slices

Alzheimer's disease is a severe neurodegenerative disorder of the brain, characterized by beta-amyloid plaques, tau pathology, and cell death of cholinergic neurons, resulting in loss of memory. The reasons for the damage of the cholinergic neurons are not clear, but the nerve growth factor (NGF) is the most potent trophic factor to support the survival of these neurons. In the present study we aim to microprint NGF onto semipermeable 0.4 μm pore membranes and couple them with organotypic brain slices of the basal nucleus of Meynert and to characterize neuronal survival and axonal growth. The brain slices were prepared from postnatal day 10 wildtype mice (C57BL6), cultured on membranes for 2–6 weeks, stained, and characterized for choline acetyltransferase (ChAT). The NGF was microcontact printed in 28 lines, each with 35 μm width, 35 μm space between them, and with a length of 8 mm. As NGF alone could not be printed on the membranes, NGF was embedded into collagen hydrogels and the brain slices were placed at the center of the microprints and the cholinergic neurons that survived. The ChAT+ processes were found to grow along with the NGF microcontact prints, but cells also migrated. Within the brain slices, some form of re-organization along the NGF microcontact prints occurred, especially the glial fibrillary acidic protein (GFAP)+ astrocytes. In conclusion, we provided a novel innovative microcontact printing technique on semipermeable membranes which can be coupled with brain slices. Collagen was used as a loading substance and allowed the microcontact printing of nearly any protein of interest.