Design and Fabrication of Wheelchair CUM Stretcher

The wheelchair and stretcher are very widely used in hospitals, airports, train stations, shopping malls, etc. This design here is a modified wheelchair stretcher as needed. This machine converts the wheelchair into a stretcher. The chair transforms into a stretcher when the levers are operated. The stretchers can be detached from the main frame according to the convenience of the patient and doctors can make it easier Access to the patient with less effort and transport The folding mechanism enables a large number of stretchers arranged in chair form to be accommodated in a comparatively smaller space. in hospitals, patients have to be moved from a wheelchair to a stretcher, from a stretcher to a bed, from a bed to a wheelchair or vice versa; which creates unsafe conditions for patients. A wheelchair stretcher is required to facilitate mobility for the disabled patient.

Enthalpies of Combustion and Formation of Severely Crowded Methyl-Substituted 1,3-dioxanes. The Magnitudes of 2,4- and 4,6-diaxial Me,Me-Interactions and the Chair–2,5-twist Energy Difference

Enthalpies of combustion of 2,2-trans-4,6- (1) and 4,4,6,6-tetramethyl- (2) and 2,4,4,6,6- (3) and 2,2,4,4,6-pentamethyl-1,3-dioxanes (4) were determined to estimate their enthalpies of formation in the gas phase. By comparing the latter with the corresponding enthalpies estimated based on the various bond–bond interactions allowed to determine the chair–2,5-twist energy difference (ΔHCT = 29.8 kJ mol–1) for 1 since C-13 shift correlations indicate that it escapes to the 2,5-twist form where the 2-methyl groups are isoclinal and 4- and 6-methyl groups pseudoequatorial to avoid syn-axial interactions. Compounds 2 and 3 in turn give the values 21.0 and 21.6 kJ mol–1 for the 4,6-diaxial Me,Me-interaction. Finally compound 4, which retains the chair conformation to avoid pseudoaxial interactions in the twist forms gives the value 19.5 kJ mol–1 for the 2,4-diaxial Me,Me-interaction indicating that its chair form appears to be somewhat deformed.

X-ray crystal structure of endosulfan sulfate

X-ray crystallography is an important method used to confirm the three-dimensional structure of a chemical compound. In this study, the crystal structure of endosulfan sulfate was investigated. Endosulfan sulfate is the major metabolite of the insecticide endosulfan, which is composed of two stereoisomers (α and β). From GC–MS analysis, α- and β-endosulfan each gave a single peak in the endosulfan sample, but only one peak was observed for endosulfan sulfate. Interestingly, in X-ray crystallography, two conformers of endosulfan sulfate (A and B) were observed at a ratio of 2(A):1(B). A heterocyclic seven-membered ring of conformer B assumed a horizontal-chair form, differing from two twisted forms of α-endosulfan while a vertical-chair form was observed for conformer A, showing the very similar structure to β-endosulfan; this difference in conformation is caused by differing bond angles at O(1)–C(8)–C(3) and O(2)–C(9)–C(4). In space packing, two asymmetric units were obtained, and three molecules were aligned in the order of A–A–B conformers in each unit. The total potential energy of A was slightly lower (approximately 4 kcal/mol) than B, possibly resulting in the two molecules of A that exist in a rigid crystal state. However, A and B conformers should not exist at room temperature in a solution state for GC–MS analysis, likely due to the small energy difference.

Kursi Betawi: Bentuk Dan Fungsi Dalam Seni Pertunjukan

ABSTRACT Chair as one of supporting elements in the life of social society Indonesian in general. With progress in experiencing shift shape and function in accordance with the development of science, technology and art. The Chair became one of an important property on Betawi arts performances. The form of a Betawi Chair having a distinctive feature different from other chairs. A method of this research is through Participatory Action Research (PAR), by selecting  Betawi Chair  as the objects which used as a stage property in Lenong Betawi shaw in a television program. This Study producet an understanding of the concept of performances on thematic stage setting, and player’acts ( interaction of the players, stage and properties ) so giving atmosphere impression and the misit which is representatif and harmony. Keywords: betawi chair, form, function, performance art     ABSTRAK Kursi sebagai salah satu elemen pendukung dalam kehidupan sosial masyarakat Indone- sia pada umumnya. Dalam perkembangannya mengalami pergeseran bentuk dan fungsi se- suai dengan perkembangan ilmu pengetahuan, teknologi dan seni. Kursi menjadi salah satu properti yang penting pada pertunjukan kesenian Betawi. Bentuk dari Kursi Betawi memiliki ciri khas yang berbeda dari kursi yang lain. Metode penelitian ini yaitu melalui Participatory Action Research (PAR), dengan memilih Kursi Betawi sebagai objek yang dipergunakan seba- gai properti panggung pertunjukan Lenong Betawi di suatu acara televisi. Kajian tulisan ini menghasilkan sebuah pemahaman konsep pertunjukan dengan penata panggung yangsesuai dengan tema, dan aktivitas pemain (interaksi pemain, panggung dan propertinya) sehingga memberikan suasana, kesan dan pesan yang representatif dan harmoni. Kata kunci: kursi betawi, bentuk, fungsi, seni pertunjukana

Crystal structure of (±)-(5SR,6SR)-6-ethenyl-1-[(RS)-1-phenylethoxy]-1-azaspiro[4.5]decan-2-one

In the title compound, C19H25NO2, the pyrrolidine ring adopts an envelope form, with the spiro C atom as the flap, while the cyclohexane ring shows a chair form. A weak intramolecular C—H...O interaction supports the molecular conformation, generating anS(6) ring motif. In the crystal, pairs of C—H...O interactions connect the molecules into inversion dimers with anR22(16) ring motif. The dimers are linked by a second pair of C—H...O interactions, enclosing anR42(12) ring motif, into a tape structure along thebaxis.

2,4,6,8-Tetrakis(2-fluorophenyl)-3,7-diazabicyclo[3.3.1]nonan-9-one

The title compound, C31H24F4N2O, exists in a chair–boat conformation with an equatorial orientation of the 2-fluorophenyl groups on both sides of the secondary amino group of the chair form. The benzene rings in the `chair' part are inclined to each other at 19.4 (1)°, while the equivalent angle between the benzene rings in the `boat' part is 75.6 (1)°. One F atom was treated as disordered over two positions in a 0.838 (4):0.162 (4) ratio. In the crystal, N—H...O hydrogen bonds link the molecules into chains along [001] and these chains are held togetherviaweak N—H...F and C—H...F interactions.