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225 Results Found

  • Article
  • Open Access
2 Citations
4,602 Views
19 Pages

12 October 2023

Protein structure prediction represents a significant challenge in the field of bioinformatics, with the prediction of protein structures using backbone dihedral angles recently achieving significant progress due to the rise of deep neural network re...

  • Communication
  • Open Access
776 Views
9 Pages

The genetic material in living systems is mainly stored in DNA molecules, which in turn play a dominant biological role in relation to the coding and transfer of genetic information, the biosynthesis of proteins and RNA and the packaging and regulati...

  • Article
  • Open Access
4 Citations
6,415 Views
14 Pages

3 July 2015

Protein structure prediction (PSP) is concerned with the prediction of protein tertiary structure from primary structure and is a challenging calculation problem. After decades of research effort, numerous solutions have been proposed for optimisatio...

  • Article
  • Open Access
2 Citations
3,719 Views
14 Pages

TAFPred: Torsion Angle Fluctuations Prediction from Protein Sequences

  • Md Wasi Ul Kabir,
  • Duaa Mohammad Alawad,
  • Avdesh Mishra and
  • Md Tamjidul Hoque

19 July 2023

Protein molecules show varying degrees of flexibility throughout their three-dimensional structures. The flexibility is determined by the fluctuations in torsion angles, specifically phi (φ) and psi (ψ), which define the protein backbone. The...

  • Article
  • Open Access
77 Citations
9,375 Views
17 Pages

Enniatin and Beauvericin Biosynthesis in Fusarium Species: Production Profiles and Structural Determinant Prediction

  • Vania C. Liuzzi,
  • Valentina Mirabelli,
  • Maria Teresa Cimmarusti,
  • Miriam Haidukowski,
  • John F. Leslie,
  • Antonio F. Logrieco,
  • Rocco Caliandro,
  • Francesca Fanelli and
  • Giuseppina Mulè

25 January 2017

Members of the fungal genus Fusarium can produce numerous secondary metabolites, including the nonribosomal mycotoxins beauvericin (BEA) and enniatins (ENNs). Both mycotoxins are synthesized by the multifunctional enzyme enniatin synthetase (ESYN1) t...

  • Article
  • Open Access
5 Citations
2,722 Views
22 Pages

Amphiphilic Comb Polymers as New Additives in Bicontinuous Microemulsions

  • Debasish Saha,
  • Karthik R. Peddireddy,
  • Jürgen Allgaier,
  • Wei Zhang,
  • Simona Maccarrone,
  • Henrich Frielinghaus and
  • Dieter Richter

2 December 2020

It has been shown that the thermodynamics of bicontinuous microemulsions can be tailored via the addition of various different amphiphilic polymers. In this manuscript, we now focus on comb-type polymers consisting of hydrophobic backbones and hydrop...

  • Article
  • Open Access
6 Citations
2,988 Views
21 Pages

Shape Sensing and Kinematic Control of a Cable-Driven Continuum Robot Based on Stretchable Capacitive Sensors

  • Wenjun Shen,
  • Jianhui He,
  • Guilin Yang,
  • Xiangjie Kong,
  • Haotian Bai and
  • Zaojun Fang

24 May 2024

A Cable-Driven Continuum Robot (CDCR) that consists of a set of identical Cable-Driven Continuum Joint Modules (CDCJMs) is proposed in this paper. The CDCJMs merely produce 2-DOF bending motions by controlling driving cable lengths. In each CDCJM, a...

  • Article
  • Open Access
76 Citations
8,761 Views
20 Pages

Improved YOLO Network for Free-Angle Remote Sensing Target Detection

  • Yuhao Qing,
  • Wenyi Liu,
  • Liuyan Feng and
  • Wanjia Gao

1 June 2021

Despite significant progress in object detection tasks, remote sensing image target detection is still challenging owing to complex backgrounds, large differences in target sizes, and uneven distribution of rotating objects. In this study, we conside...

  • Article
  • Open Access
1,949 Views
17 Pages

28 August 2023

Protein model refinement a the crucial step in improving the quality of a predicted protein model. This study presents an NMR refinement protocol called TrioSA (torsion-angle and implicit-solvation-optimized simulated annealing) that improves the acc...

  • Article
  • Open Access
17 Citations
5,109 Views
23 Pages

2 April 2020

Glycosaminoglycans (GAGs) are linear, structurally diverse, conformationally complex carbohydrate polymers that may contain up to 200 monosaccharides. These characteristics present a challenge for studying GAG conformational thermodynamics at atomic...

  • Article
  • Open Access
4 Citations
2,843 Views
11 Pages

22 January 2024

Bottlebrush (BB) elastomers with water-soluble side chains and tissue-mimetic mechanical properties are promising for biomedical applications like tissue implants and drug depots. This work investigates the microstructure and phase transitions of BB...

  • Article
  • Open Access
1,661 Views
31 Pages

14 June 2024

A method is described to deconstruct the network of hydropathic interactions within and between a protein’s sidechain and its environment into residue-based three-dimensional maps. These maps encode favorable and unfavorable hydrophobic and pol...

  • Article
  • Open Access
1,732 Views
12 Pages

Chirality and Rigidity in Triazole-Modified Peptidomimetics Interacting with Neuropilin-1

  • Bartłomiej Fedorczyk,
  • Patrycja Redkiewicz,
  • Joanna Matalińska,
  • Radosław Piast,
  • Piotr Kosson and
  • Rafał Wieczorek

31 January 2024

The interaction of Neuropilin-1 (NRP-1) with vascular endothelial growth factor (VEGF) has been shown to promote angiogenesis under physiological and pathological conditions. Angiogenesis around tumors is a major factor allowing for their growth and...

  • Article
  • Open Access
17 Citations
4,583 Views
22 Pages

13 May 2021

Leaf age and plant centre are important phenotypic information of weeds, and accurate identification of them plays an important role in understanding the morphological structure of weeds, guiding precise targeted spraying and reducing the use of herb...

  • Article
  • Open Access
5 Citations
3,174 Views
13 Pages

29 February 2024

Ribitol (C5H12O5) is an acyclic sugar alcohol that was recently identified in O-mannose glycan on mammalian α-dystroglycan. The conformation and dynamics of acyclic sugar alcohols such as ribitol are dependent on the stereochemistry of the hydr...

  • Article
  • Open Access
5 Citations
4,044 Views
21 Pages

SA3Det: Detecting Rotated Objects via Pixel-Level Attention and Adaptive Labels Assignment

  • Wenyong Wang,
  • Yuanzheng Cai,
  • Zhiming Luo,
  • Wei Liu,
  • Tao Wang and
  • Zuoyong Li

8 July 2024

Remote sensing of rotated objects often encounters numerous small and dense objects. To tackle small-object neglect and inaccurate angle predictions in elongated objects, we propose SA3Det, a novel method employing Pixel-Level Attention and Adaptive...

  • Article
  • Open Access
10 Citations
3,492 Views
25 Pages

Structure of the Flight Muscle Thick Filament from the Bumble Bee, Bombus ignitus, at 6 Å Resolution

  • Jiawei Li,
  • Hamidreza Rahmani,
  • Fatemeh Abbasi Yeganeh,
  • Hosna Rastegarpouyani,
  • Dianne W. Taylor,
  • Neil B. Wood,
  • Michael J. Previs,
  • Hiroyuki Iwamoto and
  • Kenneth A. Taylor

26 December 2022

Four insect orders have flight muscles that are both asynchronous and indirect; they are asynchronous in that the wingbeat frequency is decoupled from the frequency of nervous stimulation and indirect in that the muscles attach to the thoracic exoske...

  • Article
  • Open Access
2 Citations
2,377 Views
16 Pages

The ball penetrometer is a full-flow penetrometer used as an alternative to the traditional cone penetrometer for characterizing the strength of soft sediments, particularly for offshore engineering, due to its large projection area. However, if the...

  • Article
  • Open Access
2,383 Views
20 Pages

Enhancing the Properties of Liquid Crystal Polymers and Elastomers with Nano Magnetic Particles

  • Sarah J. Reeves,
  • Dil Patel,
  • Peter J. F. Harris,
  • Geoffrey R. Mitchell and
  • Fred J. Davis

30 October 2024

Side-chain liquid crystal polymers have been mixed with ferromagnetic particles, and the formation of a monodomain in magnetic fields studied. At relatively low concentrations, the presence of ferroparticles substantially speeds up the rate of format...

  • Article
  • Open Access
48 Citations
3,987 Views
13 Pages

Multi-rotor drones have a wide range of applications in practical scenarios; however, the use of multi-rotor drones for illegal acts is also on the rise, in order to improve the recognition accuracy of multi-rotor drones. A new multi-rotor drone dete...

  • Article
  • Open Access
54 Citations
12,496 Views
11 Pages

15 November 2017

In this work, antioxidant hydrogels were prepared by the construction of an interpenetrating chitosan network and functionalization with gallic acid. The poly(2-hydroxyethyl methacrylate) p(HEMA)-based hydrogels were first synthesized and subsequentl...

  • Short Note
  • Open Access
4 Citations
3,478 Views
6 Pages

4-[(2,4-Dichlorophenyl)carbamoyl]butanoic Acid

  • Bibi Hanifa,
  • Muhammad Sirajuddin,
  • Zafran Ullah,
  • Sumera Mahboob,
  • See Mun Lee,
  • Kong Mun Lo and
  • Edward R. T. Tiekink

4 June 2021

The synthesis and spectroscopic characterization of the glutaric acid-amide derivative, 2,4-Cl2C6H3N(H)C(=O)(CH2)3C(=O)OH (1), are described. The X-ray crystal structure determination of (1) shows the backbone of the molecule to be kinked about the m...

  • Article
  • Open Access
1 Citations
1,630 Views
13 Pages

13 November 2024

Recently, polycyclic arenes with positive curvature have gained increasing significance in the field of material chemistry. This study specifically explores the inversion barriers of a series of positively curved circulenes by using five-membered het...

  • Article
  • Open Access
18 Citations
3,847 Views
25 Pages

Structure and Interdigitation of Chain-Asymmetric Phosphatidylcholines and Milk Sphingomyelin in the Fluid Phase

  • Moritz P. K. Frewein,
  • Milka Doktorova,
  • Frederick A. Heberle,
  • Haden L. Scott,
  • Enrico F. Semeraro,
  • Lionel Porcar and
  • Georg Pabst

5 August 2021

We addressed the frequent occurrence of mixed-chain lipids in biological membranes and their impact on membrane structure by studying several chain-asymmetric phosphatidylcholines and the highly asymmetric milk sphingomyelin. Specifically, we report...

  • Article
  • Open Access
11 Citations
3,563 Views
23 Pages

Local and Global Order in Dense Packings of Semi-Flexible Polymers of Hard Spheres

  • Daniel Martínez-Fernández,
  • Miguel Herranz,
  • Katerina Foteinopoulou,
  • Nikos Ch. Karayiannis and
  • Manuel Laso

20 January 2023

The local and global order in dense packings of linear, semi-flexible polymers of tangent hard spheres are studied by employing extensive Monte Carlo simulations at increasing volume fractions. The chain stiffness is controlled by a tunable harmonic...

  • Article
  • Open Access
4 Citations
1,844 Views
20 Pages

Dual-Level Viewpoint-Learning for Cross-Domain Vehicle Re-Identification

  • Ruihua Zhou,
  • Qi Wang,
  • Lei Cao,
  • Jianqiang Xu,
  • Xiaogang Zhu,
  • Xin Xiong,
  • Huiqi Zhang and
  • Yuling Zhong

The definition of vehicle viewpoint annotations is ambiguous due to human subjective judgment, which makes the cross-domain vehicle re-identification methods unable to learn the viewpoint invariance features during source domain pre-training. This wi...

  • Article
  • Open Access
4 Citations
2,435 Views
20 Pages

Improved Method for Oriented Waste Detection

  • Weizhi Yang,
  • Yi Xie and
  • Peng Gao

24 December 2022

Waste detection is one of the main problems preventing the realization of automated waste classification, which is a basic function for robotic arms. In addition to object identification in general image analysis, a waste-sorting robotic arm not only...

  • Article
  • Open Access
12 Citations
2,059 Views
15 Pages

Rice lodging not only brings trouble to harvesting but also reduces yield. Therefore, the effective identification of rice lodging is of great significance. In this paper, we have designed a bilinear interpolation upsampling feature fusion module (BI...

  • Article
  • Open Access
7 Citations
3,985 Views
14 Pages

9 September 2020

Eight kinds of chiral diacid monomers were prepared with amino acids with different side groups or configurations. Polyester-imides (PEIs) were synthesized from these diacid monomers and diphenol monomers through polycondensation reaction, and the pe...

  • Article
  • Open Access
963 Views
17 Pages

19 August 2025

In the semiconductor manufacturing process, precise control of wafer notch angles during ion implantation is critical to prevent channeling effects that can lead to defects. Current detection methods face challenges in identifying wafer notches accur...

  • Article
  • Open Access
1 Citations
1,907 Views
20 Pages

2 October 2024

The kinetostatic compliance method (KCM) models protein molecules as nanomechanisms consisting of numerous rigid peptide plane linkages. These linkages articulate with respect to each other through changes in the molecule dihedral angles, resulting i...

  • Article
  • Open Access
1 Citations
2,869 Views
18 Pages

20 March 2022

Nematic elastomer balloons with inflation-induced axial contraction and shear/torsion effect can be used as actuators for soft robots, artificial muscles, and biomedical instruments. The nematic elastomer can also generate drastic shape changes under...

  • Article
  • Open Access
23 Citations
5,115 Views
17 Pages

Cyclic p-y Curves of Monopiles in Dense Dry Sand Using Centrifuge Model Tests

  • Myungjae Lee,
  • Kyung-Tae Bae,
  • Il-Wha Lee and
  • Mintaek Yoo

19 April 2019

In this study, centrifuge model tests were used to examine the lateral behavior of a monopile embedded in dry sand through cyclic lateral loading tests. The soil specimens used in the tests were dry Jumunjin sand with a relative density of 80% and a...

  • Article
  • Open Access
5 Citations
2,418 Views
16 Pages

Respiratory Adsorption of Organic Pollutants in Wastewater by Superhydrophobic Phenolic Xerogels

  • Yinchun Li,
  • Depeng Gong,
  • Youliang Zhou,
  • Chaocan Zhang,
  • Chunyang Zhang,
  • Yitian Sheng and
  • Shu Peng

14 April 2022

Organogel adsorbents are widely used for the adsorption of hard-to-degrade organic pollutants in wastewater due to their natural affinity to the organic phase in water. In this study, phenolic xerogels (PF) synthesised in the ethylene glycol inorgani...

  • Article
  • Open Access
13 Citations
7,113 Views
21 Pages

Biobased Waterborne Polyurethane-Ureas Modified with POSS-OH for Fluorine-Free Hydrophobic Textile Coatings

  • Amado Lacruz,
  • Mireia Salvador,
  • Miren Blanco,
  • Karmele Vidal,
  • Amaia M. Goitandia,
  • Lenka Martinková,
  • Martin Kyselka and
  • Antxon Martínez de Ilarduya

13 October 2021

Waterborne polyurethane-urea dispersions (WPUD), which are based on fully biobased amorphous polyester polyol and isophorone diisocyanate (IPDI), have been successfully synthesized obtaining a finishing agent that provides textiles with an enhanced h...

  • Article
  • Open Access
1 Citations
1,695 Views
22 Pages

Detection and Optimization of Photovoltaic Arrays’ Tilt Angles Using Remote Sensing Data

  • Niko Lukač,
  • Sebastijan Seme,
  • Klemen Sredenšek,
  • Gorazd Štumberger,
  • Domen Mongus,
  • Borut Žalik and
  • Marko Bizjak

25 March 2025

Maximizing the energy output of photovoltaic (PV) systems is becoming increasingly important. Consequently, numerous approaches have been developed over the past few years that utilize remote sensing data to predict or map solar potential. However, t...

  • Article
  • Open Access
6 Citations
1,181 Views
30 Pages

GCA2Net: Global-Consolidation and Angle-Adaptive Network for Oriented Object Detection in Aerial Imagery

  • Shenbo Zhou,
  • Zhenfei Liu,
  • Hui Luo,
  • Guanglin Qi,
  • Yunfeng Liu,
  • Haorui Zuo,
  • Jianlin Zhang and
  • Yuxing Wei

19 March 2025

Enhancing the detection capabilities of rotated objects in aerial imagery is a vital aspect of the burgeoning field of remote sensing technology. The objective is to identify and localize objects oriented in arbitrary directions within the image. In...

  • Article
  • Open Access
6 Citations
2,646 Views
12 Pages

11 April 2021

Size exclusion chromatography equipped with a multi-angle, light-scattering online detector (SEC-MALS) measurements were carried out on a hydrophobically modified pullulan (PUL-OSA) with degrees of substitution (DS) of 0.14, 0.2, and 0.3 in 0.01 M aq...

  • Article
  • Open Access
3 Citations
3,201 Views
17 Pages

An Improved Mask2Former-HRNet Method for Insulator Defect Detection

  • Yaoran Huo,
  • Lan Xiao,
  • Zhenyu Tang,
  • Jian Zhou,
  • Xu Dai,
  • Yuhao Xiao and
  • Xia Fang

23 January 2025

To solve the problem of scale variation in insulator images captured by drones, caused by the lack of control over angle and distance, which makes it hard to detect subtle defects, this paper proposes an instance segmentation method based on an impro...

  • Article
  • Open Access
8 Citations
4,413 Views
11 Pages

Self-Doped Conjugated Polymeric Binders Improve the Capacity and Mechanical Properties of V2O5 Cathodes

  • Xiaoyi Li,
  • Hyosung An,
  • Joseph Strzalka,
  • Jodie Lutkenhaus and
  • Rafael Verduzco

1 April 2019

Polymeric binders serve to stabilize the morphology of electrodes by providing adhesion and binding between the various components. Successful binders must serve multiple functions simultaneously, including providing strong adhesion, improving conduc...

  • Short Note
  • Open Access
3 Citations
3,287 Views
5 Pages

4-[(4-Chlorophenyl)carbamoyl]butanoic Acid

  • Bibi Hanifa,
  • Muhammad Sirajuddin,
  • Ahmed Bari,
  • See Mun Lee,
  • Kong Mun Lo and
  • Edward R. T. Tiekink

6 May 2021

The X-ray crystal structure determination of the glutaric acid-amide derivative, 4-ClC6H4N(H)C(=O)(CH2)3C(=O)OH (1), is described. The backbone of the molecule adopts an extended, all-trans configuration but the terminal carboxylic acid and phenyl re...

  • Feature Paper
  • Article
  • Open Access
2,536 Views
10 Pages

20 January 2022

Allyl alcohol polyoxyethylene ether (APEG), hydroxyethyl methacrylate (HEMA) and styrene sodium sulfonate (SSS) were used as monomers to obtain a APEG-HEMA-SSS comb-like polymer, which was employed as the polysulfonate dispersant for pendimethalin su...

  • Article
  • Open Access
11 Citations
4,686 Views
16 Pages

Developing New Thermal Protection Method for AC Electric Motors

  • Igor V. Bochkarev,
  • Ivan V. Bryakin,
  • Vadim R. Khramshin,
  • Aida R. Sandybaeva and
  • Konstantin V. Litsin

Monitoring the thermal state of windings of electrical machines is a backbone for protection from unacceptable overheating. A large number of different methods and systems aim to solve this problem. This article discusses the main known methods of th...

  • Article
  • Open Access
6 Citations
3,475 Views
19 Pages

14 December 2022

The detection of arbitrarily rotated objects in aerial images is challenging due to the highly complex backgrounds and the multiple angles of objects. Existing detectors are not robust relative to the varying angle of objects because the CNNs do not...

  • Article
  • Open Access
3 Citations
2,166 Views
16 Pages

Pixel Self-Attention Guided Real-Time Instance Segmentation for Group Raised Pigs

  • Zongwei Jia,
  • Zhichuan Wang,
  • Chenyu Zhao,
  • Ningning Zhang,
  • Xinyue Wen and
  • Zhiwei Hu

21 November 2023

Instance segmentation is crucial to modern agriculture and the management of pig farms. In practical farming environments, challenges arise due to the mutual adhesion, occlusion, and dynamic changes in body posture among pigs, making accurate segment...

  • Article
  • Open Access
4 Citations
4,389 Views
18 Pages

18 October 2024

Recent breakthroughs in the determination of atomic resolution 3-D cryo-electron microscopy structures of membrane proteins present an unprecedented opportunity for drug discovery. Structure-based drug discovery utilizing in silico methods enables th...

  • Article
  • Open Access
7 Citations
4,408 Views
20 Pages

Synthesis and Properties of Poly(imides) and Poly(imides)/Ionic Liquid Composites Bearing a Benzimidazole Moiety

  • Claudio A. Terraza,
  • Pablo Ortiz,
  • Luis H. Tagle,
  • Germán Pérez,
  • César Saldias,
  • Fidel E. Rodríguez-González,
  • Gustavo Cabrera-Barjas,
  • Henry Catalán,
  • Alain Tundidor-Camba and
  • Deysma Coll

30 April 2019

Three new aromatic poly(imides) containing benzimidazole units in the backbone were synthesized and characterized by several spectroscopic techniques. Flexible spacer groups were incorporated into the poly(imides) structure to improve their solubilit...

  • Article
  • Open Access
1,290 Views
12 Pages

A Fluorescence Sensor Based on Biphenolic Backbone for Metal Ion Detection: Synthesis and Crystal Structure

  • Kanokporn Chantaniyomporn,
  • Kiratikarn Charoensuk,
  • Tanwawan Duangthongyou,
  • Kittipong Chainok and
  • Boontana Wannalerse

30 October 2024

2′-(hexyloxy)-[1,1′-biphenyl]-2-yl 5-(dimethylamino)naphthalene-1-sulfonate (KC1) was synthesized by using biphenol and dansyl chloride as starting materials. The KC1 was characterized via single X-ray diffraction, FTIR, HRMS and 1H and 1...

  • Article
  • Open Access
5 Citations
4,206 Views
21 Pages

Changes of Conformation in Albumin with Temperature by Molecular Dynamics Simulations

  • Piotr Weber,
  • Piotr Bełdowski,
  • Krzysztof Domino,
  • Damian Ledziński and
  • Adam Gadomski

1 April 2020

This work presents the analysis of the conformation of albumin in the temperature range of 300 K 312 K , i.e., in the physiological range. Using molecular dynamics simulations, we calculate values of the backbone and dihedral angles fo...

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