A novel test configuration design method for inverse identification of in-plane moduli of a composite plate under the PFEUM framework

We propose a novel sensitivity based approach that predicts and explains the accuracy of material parameter identification for a composite plate using the Projected Finite Element Update Method. A typical experiment using the Projected Finite Element Update Method technique involves a plate specimen held at 3 or 4 supports and bent under the application of a point load. Two‐Dimensional Digital Image Correlation is used to measure the pseudo displacements resulting from the projection of out‐of‐plane deflection of the plate onto the image plane. A cost function relating the projected numerical and experimental displacement fields is then minimised to obtain the material parameters. It is shown that the contribution of a specific material parameter in the observed displacement field influences the accuracy of its identification. The contributions from material parameters are first quantified in terms of sensitivity criterion that may be tailored by changing the elements of test configuration such as location of supports, the load application point, and the specimen geometry. Several test configurations are designed by maximising the sensitivities corresponding to individual material parameters. The relevance of proposed sensitivity criterion in these configurations is then validated through material identification in simulated experiments with added Gaussian noise. Finally, a thin CFRP plate is tested under these configurations to demonstrate the practical use of this approach. The proposed approach helps in robust estimation of the in‐plane elastic moduli from a bent composite plate with a simple Two‐Dimensional Digital Image Correlation setup without requiring measurement of the actual plate deflection or curvatures

N-Benzyl-N-cyclo­hexyl­benzene­sulfonamide

In the title compound, C19H23NO2S, the cyclo­hexyl ring exists in a chair form. The dihedral angle between the two terminal phenyl rings is 86.70 (6)°. No significant inter­actions are observed except for a weak intra­molecular C—H⋯O hydrogen bond

N-Cyclo­hexyl-N-propyl­benzene­sulfonamide

The title compound, C15H23NO2S, synthesized by N-methyl­ation of cyclo­hexyl­amine sulfonamide with propyl iodide, is of inter­est as a precursor to biologically active sulfur-containing heterocyclic compounds. The cyclo­hexyl ring exists in the chair form and the dihedral angle between the ring plane of the benzene ring and that of the cyclo­hexyl ring is 50.13 (9)°

N-Cyclo­hexyl-N-(prop-2-en-1-yl)benzene­sulfonamide

The title compound, C15H21NO2S, synthesized by N-alkyl­ation of cyclo­hexyl­amine benzene­sulfonamide with allyl iodide, is of inter­est as a precursor to biologically active sulfur-containing heterocyclic compounds. The cyclo­hexane ring is in a chair form and its mean plane makes a dihedral angle of 53.84 (12)° with the phenyl ring

N-Cyclo­hexyl-N-ethyl­benzene­sulfonamide

The title compound, C14H21NO2S, synthesized by N-methyl­ation of cyclo­hexyl­amine sulfonamide with ethyl iodide is of inter­est as a precursor to biologically active sulfur-containing heterocyclic compounds. There are two independent mol­ecules in the asymmetric unit. The dihedral angles between the mean planes of the phenyl ring and the cyclo­hexyl ring are 40.29 (11) and 37.91 (13)° in the two mol­ecules

Comparing the Techniques for Management of Closed Tibial Fractures

Objective: The objective is to compare the radiological outcome of closed interlock intramedullary nailing versus dynamic compression plating in closed tibial fracture. Methodology: The study took place in Department of orthopedics Nishtar Hospital Multan from 9th July 2016 to March 2017. Study design is randomized controlled trials. There were 302 patients divided in two equal groups of 151. Permission was taken from the ethical committee of Nishtar Hospital. The 302 patients in age group 20-50 years of both genders meeting the inclusion and exclusion criteria attending the outpatient clinic or admitted to the orthopedics department through emergency were included in the study. All the data entered and analyzed using computer software SPSS version 10. For quantitative variables like age and duration of fracture mean and standard deviation was calculated. For categorical variables like gender, malunion and infection frequency and percentage were calculated. Chi-square test was applied to compare the malunion and infection in both groups. A p value 0.05 was considered statistically significant. Results: The 100% (n=302) patients were divided into 2 groups equally, 151 in each, i.e. intramedullary nail (group 1) and dynamic compression plating (group 2). The main outcome variables of this study were the malunion and infection. It was observed that malunion presented as 57% (n=86) and 70.9% (n=107) in group 1 and group 2 respectively. It was also observed that infection presented as 23.2% (n=35) and 37.1% (n=56) in group 1 and group 2 respectively. After applying chi-square test, it was noted that malunion associated with groups having p-value 0.012. But it was not associated with gender, stratified age and duration of fracture having p-values 0.497, 0.800 and 0.218 respectively. Similarly, after applying chi-square test, it was noted that infection associated with gender and groups having p-values 0.007 and 0.008 respectively. But it was not associated with stratified age and duration of fracture having p-values 0.565 and 0.344 respectively. Conclusion: Closed interlock intramedullary nailing has malunion and infection rates less than dynamic compression plating. So closed interlock intramedullary nailing is preferred method of closed tibia diaphyseal fracture treatment. Keywords: Intramedullary nailing, closed tibia diaphyseal fracture, dynamic compression plating

A second monoclinic polymorph of N-cyclo­hexyl-N-ethyl­benzene­sulfonamide

The crystal structure of the title compound, C14H21NO2S, is a polymorph of the structure reported by Khan et al. [Acta Cryst. (2009), E65, o2867] which is also monoclinic (space group P21/c). The unit cell in the title structure is approximately half the volume of the previously reported polymorph and the asymmetric unit of the title compound contains one mol­ecule rather than two independent mol­ecules in the other polymorph. In the title mol­ecule, the cyclo­hexane ring is in the typical chair form. In the crystal structure, mol­ecules are linked via weak inter­molecular C—H⋯O inter­actions, forming a chain along the b-axis direction

Enhancing Carbon Sequestration Using Organic Amendments and Agricultural Practices

Carbon sequestration (CS) is an important strategy for the mitigation of climate change (CC) as well as for improving the soil fertility of agricultural soils. Carbon sequestration in crop lands and rangelands requires a certain amount of organic matter (OM) presence in the soil called soil organic matter (SOM). Organic amendments like animal and poultry manures, the incorporation of different crop residues, different types of compost, sugarcane bagasse, peat soils, different wood chips, biochar and good agricultural practices like cover crops, nutrient management, mulching, zero and no-tillage techniques, soil biota management and mulching are effectively used for this purpose. These enhance the SOM and improve the soil’s physical and chemical properties which help to sequester more C in soil which ultimately contributes towards CS and CC mitigation

Peutz-Jeghers Syndrome presenting as Intussusception in a young female: A Case Report

Peutz-jeghers syndrome is rare condition with autosomal dominant inheritance. It is due to the mutation in a tumor suppressor gene SK 11 at chromosome no 9. It has a very characteristic presentation. Patient usually presents at a young age with intestinal obstruction due to polyps leading to intussusception. Also there is melanosis at perioral, digits and perineal regions. There is very strong association of cervical and breast carcinoma in females and testicular tumors in males. GIT, pancreatic and lung malignancies occur in both sexes. Regular follow up and screening are necessary for early detection of malignancies. We present a case of young girl who presented with intestinal obstruction along with other signs and symptoms of peutz-jeghers syndrome. Exploratory laparotomy revealed jejunoileal intussusception and hamartomatous polyps. Patient and other family members were advised screening studies of associated malignancies and regular follow up

Permutation-Aware Action Segmentation via Unsupervised Frame-to-Segment Alignment

This paper presents an unsupervised transformer-based framework for temporal activity segmentation which leverages not only frame-level cues but also segment-level cues. This is in contrast with previous methods which often rely on frame-level information only. Our approach begins with a frame-level prediction module which estimates framewise action classes via a transformer encoder. The frame-level prediction module is trained in an unsupervised manner via temporal optimal transport. To exploit segment-level information, we utilize a segment-level prediction module and a frame-to-segment alignment module. The former includes a transformer decoder for estimating video transcripts, while the latter matches frame-level features with segment-level features, yielding permutation-aware segmentation results. Moreover, inspired by temporal optimal transport, we introduce simple-yet-effective pseudo labels for unsupervised training of the above modules. Our experiments on four public datasets, i.e., 50 Salads, YouTube Instructions, Breakfast, and Desktop Assembly show that our approach achieves comparable or better performance than previous methods in unsupervised activity segmentation.Comment: Accepted to WACV 202