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Article: Catalytic Hydrogen Evolution from H

Afzal, Saba / Hussain, Humaira / Naz, Muhammad Yasin / Shukrullah, Shazia / Ahmad, Irshad / Irfan, Muhammad / Mursal, Salim Nasar Faraj / Legutko, Stanislaw / Kruszelnicka, Izabela / Ginter-Kramarczyk, Dobrochna

Materials (Basel, Switzerland)

2022 Volume 15, Issue 21

Abstract: The use of non-thermal plasma technology in producing green fuels is a much-appreciated environmentally friendly approach. In this study, an ... ...

Abstract	The use of non-thermal plasma technology in producing green fuels is a much-appreciated environmentally friendly approach. In this study, an Al
Language	English
Publishing date	2022-10-23
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2487261-1
ISSN	1996-1944
ISSN	1996-1944
DOI	10.3390/ma15217426
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Article ; Online: Robust H

Al-Wais, Saba / Khoo, Suiyang / Lee, Tae Hee / Shanmugam, Lakshmanan / Nahavandi, Saeid

ISA transactions

2017

Abstract: ... the dynamics of the environment and human operator forces, H ...

Abstract	This paper is devoted to the synchronization problem of tele-operation systems with time-varying delay, disturbances, and uncertainty. Delay-dependent sufficient conditions for the existence of integral sliding surfaces are given in the form of Linear Matrix Inequalities (LMIs). This guarantees the global stability of the tele-operation system with known upper bounds of the time-varying delays. Unlike previous work, in this paper, the controller gains are designed but not chosen, which increases the degree of freedom of the design. Moreover, Wirtinger based integral inequality and reciprocally convex combination techniques used in the constructed Lypunove-Krasoviskii Functional (LKF) are deemed to give less conservative stability condition for the system. Furthermore, to relax the analysis from any assumptions regarding the dynamics of the environment and human operator forces, H
Language	English
Publishing date	2017-10-27
Publishing country	United States
Document type	Journal Article
ZDB-ID	2012746-7
ISSN	1879-2022 ; 0019-0578
ISSN (online)	1879-2022
ISSN	0019-0578
DOI	10.1016/j.isatra.2017.10.009
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Article ; Online: Characterization of a flexible a-Si:H detector for in vivo dosimetry in therapeutic x-ray beams.

Large, Matthew James / Bashiri, Aishah / Dookie, Yashiv / McNamara, Joanne / Antognini, Luca / Aziz, Saba / Calcagnile, Lucio / Caricato, Anna Paola / Catalano, Roberto / Chila, Deborah / Cirrone, Giuseppe Antonio Pablo / Croci, Tomasso / Cuttone, Giacomo / Dunand, Sylvain / Fabi, Michele / Frontini, Luca / Grimani, Catia / Ionica, Maria / Kanxheri, Keida /

Liberali, Valentino / Maurizio, Martino / Maruccio, Giuseppe / Mazza, Giovanni / Menichelli, Mauro / Monteduro, Anna Grazia / Morozzi, Arianna / Moscatelli, Francesco / Pallotta, Stefania / Passeri, Daniele / Pedio, Maddalena / Petringa, Giada / Peverini, Francesca / Piccolo, Lorenzo / Placidi, Pisana / Quarta, Gianluca / Rizzato, Silvia / Sabbatini, Federico / Servoli, Leonello / Stabile, Alberto / Talamonti, Cinzia / Thomet, Jonathan Emanuel / Tosti, Luca / Villani, Mattia / Wheadon, Richard James / Wyrsch, Nicolas / Zema, Nicola / Petasecca, Marco

Medical physics

2024

Abstract: ... hydrogenated amorphous silicon (a-Si:H) radiation detector for the dosimetry of therapeutic x-ray beams ... percentage depth dose (PDD), and angular dependence. The response of the a-Si:H detectors investigated ... currently employed for QA practices.: Results: The a-Si:H detectors exhibit remarkable dose linearities ...

Abstract	Background: The increasing use of complex and high dose-rate treatments in radiation therapy necessitates advanced detectors to provide accurate dosimetry. Rather than relying on pre-treatment quality assurance (QA) measurements alone, many countries are now mandating the use of in vivo dosimetry, whereby a dosimeter is placed on the surface of the patient during treatment. Ideally, in vivo detectors should be flexible to conform to a patient's irregular surfaces. Purpose: This study aims to characterize a novel hydrogenated amorphous silicon (a-Si:H) radiation detector for the dosimetry of therapeutic x-ray beams. The detectors are flexible as they are fabricated directly on a flexible polyimide (Kapton) substrate. Methods: The potential of this technology for application as a real-time flexible detector is investigated through a combined dosimetric and flexibility study. Measurements of fundamental dosimetric quantities were obtained including output factor (OF), dose rate dependence (DPP), energy dependence, percentage depth dose (PDD), and angular dependence. The response of the a-Si:H detectors investigated in this study are benchmarked directly against commercially available ionization chambers and solid-state diodes currently employed for QA practices. Results: The a-Si:H detectors exhibit remarkable dose linearities in the direct detection of kV and MV therapeutic x-rays, with calibrated sensitivities ranging from (0.580 ± 0.002) pC/cGy to (19.36 ± 0.10) pC/cGy as a function of detector thickness, area, and applied bias. Regarding dosimetry, the a-Si:H detectors accurately obtained OF measurements that parallel commercially available detector solutions. The PDD response closely matched the expected profile as predicted via Geant4 simulations, a PTW Farmer ionization chamber and a PTW ROOS chamber. The most significant variation in the PDD performance was 5.67%, observed at a depth of 3 mm for detectors operated unbiased. With an external bias, the discrepancy in PDD response from reference data was confined to ± 2.92% for all depths (surface to 250 mm) in water-equivalent plastic. Very little angular dependence is displayed between irradiations at angles of 0° and 180°, with the most significant variation being a 7.71% decrease in collected charge at a 110° relative angle of incidence. Energy dependence and dose per pulse dependence are also reported, with results in agreement with the literature. Most notably, the flexibility of a-Si:H detectors was quantified for sample bending up to a radius of curvature of 7.98 mm, where the recorded photosensitivity degraded by (-4.9 ± 0.6)% of the initial device response when flat. It is essential to mention that this small bending radius is unlikely during in vivo patient dosimetry. In a more realistic scenario, with a bending radius of 15-20 mm, the variation in detector response remained within ± 4%. After substantial bending, the detector's photosensitivity when returned to a flat condition was (99.1 ± 0.5)% of the original response. Conclusions: This work successfully characterizes a flexible detector based on thin-film a-Si:H deposited on a Kapton substrate for applications in therapeutic x-ray dosimetry. The detectors exhibit dosimetric performances that parallel commercially available dosimeters, while also demonstrating excellent flexibility results.
Language	English
Publishing date	2024-03-03
Publishing country	United States
Document type	Journal Article
ZDB-ID	188780-4
ISSN	2473-4209 ; 0094-2405
ISSN (online)	2473-4209
ISSN	0094-2405
DOI	10.1002/mp.17013
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Article ; Online: A Historic Perspective and Overview of H-Ras Structure, Oncogenicity, and Targeting.

Shu, Lihua / Wang, Dongsheng / Saba, Nabil F / Chen, Zhuo G

Molecular cancer therapeutics

2021 Volume 19, Issue 4, Page(s) 999–1007

Abstract: H-Ras is a unique isoform of the Ras GTPase family, one of the most prominently mutated oncogene ... families across the cancer landscape. Relative to other isoforms, though, mutations of H-Ras account ... this isoform, especially as certain H-Ras-driven cancers, like those of the head and neck, have become more ...

Abstract	H-Ras is a unique isoform of the Ras GTPase family, one of the most prominently mutated oncogene families across the cancer landscape. Relative to other isoforms, though, mutations of H-Ras account for the smallest proportion of mutant Ras cancers. Yet, in recent years, there have been renewed efforts to study this isoform, especially as certain H-Ras-driven cancers, like those of the head and neck, have become more prominent. Important advances have therefore been made not only in the understanding of H-Ras structural biology but also in approaches designed to inhibit and impair its signaling activity. In this review, we outline historic and present initiatives to elucidate the mechanisms of H-Ras-dependent tumorigenesis as well as highlight ongoing developments in the quest to target this critical oncogene.
MeSH term(s)	History, 20th Century ; History, 21st Century ; Humans ; Molecular Targeted Therapy ; Mutation ; Neoplasms/drug therapy ; Neoplasms/genetics ; Neoplasms/pathology ; Proto-Oncogene Proteins p21(ras)/chemistry ; Proto-Oncogene Proteins p21(ras)/genetics ; Proto-Oncogene Proteins p21(ras)/history ; Proto-Oncogene Proteins p21(ras)/metabolism ; Signal Transduction
Chemical Substances	HRAS protein, human (EC 3.6.5.2) ; Proto-Oncogene Proteins p21(ras) (EC 3.6.5.2)
Language	English
Publishing date	2021-04-01
Publishing country	United States
Document type	Historical Article ; Journal Article ; Review
ZDB-ID	2063563-1
ISSN	1538-8514 ; 1535-7163
ISSN (online)	1538-8514
ISSN	1535-7163
DOI	10.1158/1535-7163.MCT-19-0660
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Zs.A 5750: Show issues

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Article ; Online: Widespread monoclonal IgE antibody convergence to an immunodominant, proanaphylactic Ara h 2 epitope in peanut allergy.

Croote, Derek / Wong, Joyce J W / Pecalvel, Cyprien / Leveque, Edouard / Casanovas, Natacha / Kamphuis, Jasper B J / Creeks, Paige / Romero, Johanna / Sohail, Saba / Bedinger, Daniel / Nadeau, Kari C / Chinthrajah, Rebecca S / Reber, Laurent L / Lowman, Henry B

The Journal of allergy and clinical immunology

2023 Volume 153, Issue 1, Page(s) 182–192.e7

Abstract: ... to the immunodominant peanut allergen Ara h 2, specifically a linear, repetitive motif. Further characterization ... that these mAbs, reengineered as IgGs, inhibit significant, but variable, amounts of Ara h 2- and peanut-mediated ...

Abstract	Background: Despite their central role in peanut allergy, human monoclonal IgE antibodies have eluded characterization. Objective: We sought to define the sequences, affinities, clonality, and functional properties of human monoclonal IgE antibodies in peanut allergy. Methods: We applied our single-cell RNA sequencing-based SEQ SIFTER discovery platform to samples from allergic individuals who varied by age, sex, ethnicity, and geographic location in order to understand commonalities in the human IgE response to peanut allergens. Select antibodies were then recombinantly expressed and characterized for their allergen and epitope specificity, affinity, and functional properties. Results: We found striking convergent evolution of IgE monoclonal antibodies (mAbs) from several clonal families comprising both memory B cells and plasmablasts. These antibodies bound with subnanomolar affinity to the immunodominant peanut allergen Ara h 2, specifically a linear, repetitive motif. Further characterization of these mAbs revealed their ability to single-handedly cause affinity-dependent degranulation of human mast cells and systemic anaphylaxis on peanut allergen challenge in humanized mice. Finally, we demonstrated that these mAbs, reengineered as IgGs, inhibit significant, but variable, amounts of Ara h 2- and peanut-mediated degranulation of mast cells sensitized with allergic plasma. Conclusions: Convergent evolution of IgE mAbs in peanut allergy is a common phenomenon that can reveal immunodominant epitopes on major allergenic proteins. Understanding the functional properties of these molecules is key to developing therapeutics, such as competitive IgG inhibitors, that are able to stoichiometrically outcompete endogenous IgE for allergen and thereby prevent allergic cascade in cases of accidental allergen exposure.
MeSH term(s)	Humans ; Animals ; Mice ; Peanut Hypersensitivity ; Immunodominant Epitopes ; Antigens, Plant ; Glycoproteins ; Immunoglobulin E ; Epitopes ; Antibodies, Monoclonal ; Allergens ; Arachis ; 2S Albumins, Plant
Chemical Substances	Immunodominant Epitopes ; Antigens, Plant ; Glycoproteins ; Immunoglobulin E (37341-29-0) ; Epitopes ; Antibodies, Monoclonal ; Allergens ; 2S Albumins, Plant
Language	English
Publishing date	2023-09-23
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
ZDB-ID	121011-7
ISSN	1097-6825 ; 1085-8725 ; 0091-6749
ISSN (online)	1097-6825 ; 1085-8725
ISSN	0091-6749
DOI	10.1016/j.jaci.2023.08.035
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Article ; Online: Effect of two vitamin D repletion protocols on 24-h urine calcium in patients with recurrent calcium kidney stones and vitamin D deficiency: a randomized clinical trial.

Sardari Masihi, Lilit / Borumandnia, Nasrin / Taheri, Maryam / Basiri, Abbas / Imani, Hossein / Jalali, Saba / Tavasoli, Sanaz

European journal of medical research

2023 Volume 28, Issue 1, Page(s) 246

Abstract: ... on serum levels of 25-hydroxyvitamin D (25(OH)D) and 24-h urine calcium in patients with recurrent calcium ... including 24-h urine calcium, supersaturations of calcium oxalate and calcium phosphate, serum 25(OH)D and ... parathyroid hormone were measured at the beginning of the study and after 12 weeks.: Results: The 24-h urine ...

Abstract	Objectives: To evaluate the effects of two vitamin D repletion therapies (cholecalciferol) on serum levels of 25-hydroxyvitamin D (25(OH)D) and 24-h urine calcium in patients with recurrent calcium kidney stones and vitamin D deficiency (VDD). Design, setting, participants: A parallel-group randomized controlled clinical trial on patients who referred to Labbafinejad kidney stone prevention clinic, Tehran, Iran. From 88 recurrent calcium stone formers, 62 patients completed the study. The age of participants was 18-70 years who had serum 25(OH)D levels of 10-20 ng/ml. Intervention: Participants received oral cholecalciferol 2000 IU daily for 12 weeks or 50,000 IU weekly for 8 weeks. Main outcome measures: Study variables including 24-h urine calcium, supersaturations of calcium oxalate and calcium phosphate, serum 25(OH)D and parathyroid hormone were measured at the beginning of the study and after 12 weeks. Results: The 24-h urine calcium significantly increased in both groups (β = 69.70, p < 0.001), with no significant difference between treatments. Both groups showed no significant change in the supersaturation levels of calcium oxalate and calcium phosphate. Serum levels of 25(OH)D increased significantly (β = 12.53, p < 0.001), with more increase in the 50,000 IU group (β = 3.46, p = 0.003). Serum parathyroid hormone decreased in both groups (p < 0.001). Conclusions: Although both treatment protocols increased 24-h urine calcium, they did not increase the supersaturation state of calcium oxalate or calcium phosphate. Trial registration IRCT20160206026406N4, 13/08/2019.
MeSH term(s)	Adolescent ; Adult ; Aged ; Humans ; Middle Aged ; Young Adult ; Calcium ; Calcium Oxalate ; Calcium Phosphates ; Cholecalciferol/pharmacology ; Iran ; Kidney Calculi/drug therapy ; Parathyroid Hormone ; Vitamin D ; Vitamin D Deficiency/drug therapy ; Vitamins
Chemical Substances	Calcium (SY7Q814VUP) ; Calcium Oxalate (2612HC57YE) ; calcium phosphate (97Z1WI3NDX) ; Calcium Phosphates ; Cholecalciferol (1C6V77QF41) ; Parathyroid Hormone ; Vitamin D (1406-16-2) ; Vitamins
Language	English
Publishing date	2023-07-22
Publishing country	England
Document type	Journal Article ; Randomized Controlled Trial
ZDB-ID	1329381-3
ISSN	2047-783X ; 0949-2321
ISSN (online)	2047-783X
ISSN	0949-2321
DOI	10.1186/s40001-023-01226-z
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Zs.A 4636: Show issues

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Article ; Online: Correction: Metal-organic framework (MOF)-, covalent-organic framework (COF)-, and porous-organic polymers (POP)-catalyzed selective C-H bond activation and functionalization reactions.

Daliran, Saba / Oveisi, Ali Reza / Peng, Yong / López-Magano, Alberto / Khajeh, Mostafa / Mas-Ballesté, Rubén / Alemán, José / Luque, Rafael / Garcia, Hermenegildo

Chemical Society reviews

2022 Volume 51, Issue 18, Page(s) 8140

Abstract: ... organic polymers (POP)-catalyzed selective C-H bond activation and functionalization reactions' by Saba ...

Abstract	Correction for 'Metal-organic framework (MOF)-, covalent-organic framework (COF)-, and porous-organic polymers (POP)-catalyzed selective C-H bond activation and functionalization reactions' by Saba Daliran
Language	English
Publishing date	2022-09-20
Publishing country	England
Document type	Published Erratum
ZDB-ID	1472875-8
ISSN	1460-4744 ; 0306-0012
ISSN (online)	1460-4744
ISSN	0306-0012
DOI	10.1039/d2cs90071h
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Article ; Online: Metal-organic framework (MOF)-, covalent-organic framework (COF)-, and porous-organic polymers (POP)-catalyzed selective C-H bond activation and functionalization reactions.

Daliran, Saba / Oveisi, Ali Reza / Peng, Yong / López-Magano, Alberto / Khajeh, Mostafa / Mas-Ballesté, Rubén / Alemán, José / Luque, Rafael / Garcia, Hermenegildo

Chemical Society reviews

2022 Volume 51, Issue 18, Page(s) 7810–7882

Abstract: Although C-H functionalization is one of the simplest reactions, it requires the use of highly ... active and selective catalysts. Recently, C-H-active transformations using porous materials ... an overview of the current state of the art on MOFs, COFs and POPs as advanced catalysts for various C-H bond ...

Abstract	Although C-H functionalization is one of the simplest reactions, it requires the use of highly active and selective catalysts. Recently, C-H-active transformations using porous materials such as crystalline metal-organic frameworks (MOFs) and covalent-organic frameworks (COFs) as well as amorphous porous-organic polymers (POPs) as new emerging heterogeneous catalysts have attracted significant attention due to their promising activity and potential material tunability. These porous solids offer exceptional structural uniformity, facile tunability and permanent porosity. In addition, tuning the catalytic selectivity of these porous materials can be achieved through engineering their site microenvironments, such as metal node substitution, linker changes, node/linker functionalization, and pore modification. The present review provides an overview of the current state of the art on MOFs, COFs and POPs as advanced catalysts for various C-H bond activation reactions, providing details about their chemo-, regio-, and stereo-selectivity control, comparing their performance with that of other catalysts, triggering additional research by showing the present limitations and challenges in this area, and providing a perspective for future developments.
Language	English
Publishing date	2022-09-20
Publishing country	England
Document type	Journal Article ; Review
ZDB-ID	1472875-8
ISSN	1460-4744 ; 0306-0012
ISSN (online)	1460-4744
ISSN	0306-0012
DOI	10.1039/d1cs00976a
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Article: Insights from the salt bridge analysis of malate dehydrogenase from H. salinarum and E.coli.

Bandyopadhyay, Amal Kumar / Islam, Rifat Nawaz Ul / Mitra, Debanjan / Banerjee, Sahini / Yasmeen, Saba / Goswami, Arunava

Bioinformation

2019 Volume 15, Issue 2, Page(s) 95–103

Abstract: Halophilic proteins have greater abundance of acidic over basic residues in sequence. In structure, the surface is decorated by negative charges, with lower content of Lysine. Using sequence BLOCKs and 3D model of malate dehydrogenase from halophilic ... ...

Abstract	Halophilic proteins have greater abundance of acidic over basic residues in sequence. In structure, the surface is decorated by negative charges, with lower content of Lysine. Using sequence BLOCKs and 3D model of malate dehydrogenase from halophilic archaea (Halobacterium salinarum; hsMDH) and X-ray structure from mesophilic bacteria (E. coli; ecMDH), we show that not only acidic and basic residues have higher mean relative abundance (MRA) and thus, impart higher polarity to the sequences, but also show their presence in the surface of the structure of hsMDH relative to its mesophilic counterpart. These observations may indicate that both the acidic and the basic residues have a concerted role in the stability of hsMDH. Analysis on salt bridges from hsMDH and ecMDH show that in the former, salt bridges are highly intricate, newly engineered and global in nature. Although, these salt bridges are abundant in hsMDH, in the active site the design remains unperturbed. In high salt where hydrophobic force is weak, these salt bridges seem to play a major role in the haloadaptation of the tertiary structure of hsMDH. This is the first report of such an observation.
Language	English
Publishing date	2019-02-28
Publishing country	Singapore
Document type	Journal Article
ZDB-ID	2203786-X
ISSN	0973-2063
ISSN	0973-2063
DOI	10.6026/97320630015095
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Article ; Online: Synthesis, solid state self-assembly driven by antiparallel π⋯π stacking and {⋯H-C-C-F}

Mehreen, Saba / Ullah, Aman / Nadeem, Humaira / Dege, Necmi / Naseer, Muhammad Moazzam

RSC advances

2022 Volume 12, Issue 3, Page(s) 1788–1796

Abstract: A series of novel phenoxy pendant isatins PI1-12 have been synthesized in excellent yields by a simple nucleophilic substitution reaction involving isatins and 1-(2-bromoethoxy)-4-substituted benzenes, and characterized by their FT-IR, ...

Abstract	A series of novel phenoxy pendant isatins PI1-12 have been synthesized in excellent yields by a simple nucleophilic substitution reaction involving isatins and 1-(2-bromoethoxy)-4-substituted benzenes, and characterized by their FT-IR,
Language	English
Publishing date	2022-01-12
Publishing country	England
Document type	Journal Article
ISSN	2046-2069
ISSN (online)	2046-2069
DOI	10.1039/d1ra08286h
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