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35 Results Found

  • Article
  • Open Access
6 Citations
3,325 Views
10 Pages

1 November 2019

As a gene contributing to spermatogenesis, the Boule gene (also called Boll), whose mutations result in azoospermia and sterility of flies and mice, was conserved in reductional maturation divisions. However, in goats, the polymorphisms of Boule, esp...

  • Article
  • Open Access
22 Citations
4,814 Views
13 Pages

Antimicrobial Activity and Composition of Five Rosmarinus (Now Salvia spp. and Varieties) Essential Oils

  • Ylenia Pieracci,
  • Daniela Ciccarelli,
  • Silvia Giovanelli,
  • Luisa Pistelli,
  • Guido Flamini,
  • Claudio Cervelli,
  • Francesca Mancianti,
  • Simona Nardoni,
  • Fabrizio Bertelloni and
  • Valentina Virginia Ebani

9 September 2021

Salvia rosmarinus Spenn. and Salvia jordanii J.B.Walker are aromatic evergreen shrubs belonging to the Lamiaceae family. Their aerial parts have been used since ancient times as natural preservatives. The present study reported the investigation of t...

  • Article
  • Open Access
1,535 Views
11 Pages

3 April 2024

This essay examines the Holy Monday sermon by Boules George, a senior priest at St. Mark Church in Cairo, that was preached the day after the Palm Sunday suicide bomb attacks against St. George Coptic Orthodox Church in Tanta and St. Mark Coptic Orth...

  • Article
  • Open Access
1,201 Views
22 Pages

Inspection of Bulk Crystals for Quality Control in Crystal Growth: Assessment of High-Energy X-Ray Transmission Topography and Back-Reflection Topography Pinpointed for Physical Vapor Transport-Grown Aluminum Nitride

  • Roland Weingärtner,
  • Boris Epelbaum,
  • Andreas Lesnik,
  • Gleb Lukin,
  • Stephan Müller,
  • Leon Schiller,
  • Elke Meissner,
  • Matthias Weisser and
  • Sven Besendörfer

9 May 2025

A comprehensive X-ray topography analysis of two selected aluminum nitride (AlN) bulk crystals is presented. We compare surface inspection X-ray topography in back-reflection geometry with high-energy transmission topography in the Lang and Laue conf...

  • Article
  • Open Access
36 Citations
6,661 Views
22 Pages

16 April 2022

Botryosphaeria dieback (BD) is a grapevine trunk disease (GTD) causing significant yield losses and limiting the lifespan of vineyards worldwide. Fungi responsible for BD infect grapevines primarily through pruning wounds, and thus pruning wound prot...

  • Article
  • Open Access
4 Citations
14,099 Views
30 Pages

Is the Earth’s Magnetic Field a Constant? A Legacy of Poisson

  • Jean-Louis Le Mouël,
  • Fernando Lopes,
  • Vincent Courtillot,
  • Dominique Gibert and
  • Jean-Baptiste Boulé

In the report he submitted to the Académie des Sciences, Poisson imagined a set of concentric spheres at the origin of Earth’s magnetic field. It may come as a surprise to many that Poisson as well as Gauss both considered the magnetic f...

  • Article
  • Open Access
3,632 Views
15 Pages

The Effect of Starting Blood Glucose Levels on Serum Electrolyte Concentrations during and after Exercise in Type 1 Diabetes

  • Zeinab Momeni,
  • Normand G. Boulé,
  • Carla M. Prado,
  • Heather A. Hinz and
  • Jane E. Yardley

Fear of hypoglycemia is a major exercise barrier for people with type 1 diabetes (PWT1D). Consequently, although guidelines recommend starting exercise with blood glucose (BG) concentration at 7–10 mmol/L, PWT1D often start higher, potentially...

  • Article
  • Open Access
7 Citations
8,677 Views
10 Pages

Reversible structural transition between the Large (LP) and Narrow Pore (NP) forms (breathing phenomena) of the MIL-53(X, X = Al, Cr, Fe, Ga) Metal Organic Framework (MOF) is probably one of the most amazing physical properties of this class of soft-...

  • Article
  • Open Access
11 Citations
6,634 Views
16 Pages

Acute and Chronic Effects of Low-Volume High-Intensity Interval Training Compared to Moderate-Intensity Continuous Training on Glycemic Control and Body Composition in Older Women with Type 2 Diabetes

  • Alexis Marcotte-Chénard,
  • Dominic Tremblay,
  • Marie-Michelle Mony,
  • Pierre Boulay,
  • Martin Brochu,
  • José A. Morais,
  • Isabelle J. Dionne,
  • Marie-France Langlois,
  • Warner M. Mampuya and
  • Eléonor Riesco
  • + 2 authors

22 June 2021

Objective: To compare the acute and chronic effects of low-volume high-intensity interval training (HIIT) to moderate-intensity continuous training (MICT) on glycemic control, body composition and continuous glucose monitoring (CGM) in older women wi...

  • Article
  • Open Access
18 Citations
17,881 Views
18 Pages

Consumption of a High-Protein Meal Replacement Leads to Higher Fat Oxidation, Suppression of Hunger, and Improved Metabolic Profile After an Exercise Session

  • Camila L. P. Oliveira,
  • Normand G. Boulé,
  • Aloys Berg,
  • Arya M. Sharma,
  • Sarah A. Elliott,
  • Mario Siervo,
  • Sunita Ghosh and
  • Carla M. Prado

5 January 2021

The aim of this study was to compare the impact of a high-protein meal replacement (HP-MR) versus a control (CON) breakfast on exercise metabolism. In this acute, randomized controlled, cross-over study, participants were allocated into two isocalori...

  • Feature Paper
  • Article
  • Open Access
13 Citations
3,724 Views
12 Pages

Structural and Electrical Characterization of 2” Ammonothermal Free-Standing GaN Wafers. Progress toward Pilot Production

  • Daryl Key,
  • Edward Letts,
  • Chuan-Wei Tsou,
  • Mi-Hee Ji,
  • Marzieh Bakhtiary-Noodeh,
  • Theeradetch Detchprohm,
  • Shyh-Chiang Shen,
  • Russell Dupuis and
  • Tadao Hashimoto

14 June 2019

Free-standing gallium nitride (GaN) substrates are in high demand for power devices, laser diodes, and high-power light emitting diodes (LEDs). SixPoint Materials Inc. has begun producing 2” GaN substrates through our proprietary Near Equilibri...

  • Article
  • Open Access
11 Citations
4,111 Views
8 Pages

23 August 2022

Mn-doped Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 (Mn:PIN-PMN-PT) single crystals are attractive piezoelectric materials owing to their high mechanical quality factor. However, the single crystal boules grown by the conventional Bridgman method show...

  • Article
  • Open Access
1 Citations
2,637 Views
9 Pages

The Impact of BiF3 Doping on the Yb3+ to Yb2+ Reduction during the LiYF4:Yb3+ Crystal-Growth Process

  • Amir Khadiev,
  • Niyaz Akhmetov,
  • Stella Korableva,
  • Oleg Morozov,
  • Alexey Nizamutdinov,
  • Vadim Semashko,
  • Maksim Pudovkin and
  • Marat Gafurov

6 December 2022

Here, we report on the opportunity to suppress Yb3+ to Yb2+ dopant-ion reduction in LiYbxY1−xF4 mixed crystals during growth processes, using the Bridgmen–Stocbarger technique in graphite crucibles in vacuum. This was carried out by the a...

  • Article
  • Open Access
5 Citations
1,765 Views
16 Pages

Gonadotoxic agents could impair spermatogenesis and may lead to male infertility. The present study aimed to evaluate the effect of IL-1β on the development of spermatogenesis from cells isolated from seminiferous tubules (STs) of normal and bus...

  • Article
  • Open Access
3 Citations
3,452 Views
12 Pages

11 November 2021

The step structure on the (0001¯)C facet of 4H-SiC boules grown by the physical vapor transport growth method with different nitrogen doping concentrations was examined in various scales, using different types of microscopy, such as differential inte...

  • Article
  • Open Access
10 Citations
4,817 Views
10 Pages

Oxygen Inhomogeneity and Reversibility in Single Crystal LaNiO3−δ

  • Hong Zheng,
  • Bi-Xia Wang,
  • D. Phelan,
  • Junjie Zhang,
  • Yang Ren,
  • M. J. Krogstad,
  • S. Rosenkranz,
  • R. Osborn and
  • J. F. Mitchell

30 June 2020

LaNiO3−δ single crystals have been obtained via high pressure floating zone growth under 149 bar of oxygen pressure. We find a radial gradient in the magnetic properties of specimens extracted from the as-grown boule, which we correlate with the appe...

  • Article
  • Open Access
3 Citations
3,288 Views
14 Pages

Crystal Growth of the R2SiO5 Compounds (R = Dy, Ho, and Er) by the Floating Zone Method Using a Laser-Diode-Heated Furnace

  • Vasile Cristian Ciomaga Hatnean,
  • Aurel Pui,
  • Arkadiy Simonov and
  • Monica Ciomaga Hatnean

14 December 2023

In recent years, rare earth silicate compounds have attracted the extensive attention of researchers owing to their potential for applications in scintillation crystals in gamma ray or X-ray detectors, as well as in thermal or environmental barrier c...

  • Article
  • Open Access
6 Citations
3,631 Views
13 Pages

Crystal Growth by the Floating Zone Method of Ce-Substituted Crystals of the Topological Kondo Insulator SmB6

  • Monica Ciomaga Hatnean,
  • Talha Ahmad,
  • Marc Walker,
  • Martin R. Lees and
  • Geetha Balakrishnan

17 September 2020

SmB6 is a mixed valence topological Kondo insulator. To investigate the effect of substituting Sm with magnetic Ce ions on the physical properties of samarium hexaboride, Ce-substituted SmB6 crystals were grown by the floating zone method for the fir...

  • Article
  • Open Access
12 Citations
5,665 Views
17 Pages

Single-Crystal Growth of Metallic Rare-Earth Tetraborides by the Floating-Zone Technique

  • Daniel Brunt,
  • Monica Ciomaga Hatnean,
  • Oleg A. Petrenko,
  • Martin R. Lees and
  • Geetha Balakrishnan

19 April 2019

The rare-earth tetraborides are exceptional in that the rare-earth ions are topologically equivalent to the frustrated Shastry-Sutherland lattice. In this paper, we report the growth of large single crystals of RB 4 (where R = Nd, Gd → T...

  • Article
  • Open Access
8 Citations
4,140 Views
11 Pages

13 October 2020

Systematic cryo-banking of semen and testicular tissues is critical to preserve the genetic value of recently deceased or neutered black-footed ferrets (BFFs). Specifically, recovering or producing mature sperm cells from vitrified-warmed issues offe...

  • Article
  • Open Access
15 Citations
6,741 Views
10 Pages

Optimization of the SiC Powder Source Material for Improved Process Conditions During PVT Growth of SiC Boules

  • Oda Marie Ellefsen,
  • Matthias Arzig,
  • Johannes Steiner,
  • Peter Wellmann and
  • Pål Runde

8 October 2019

We have studied the influence of different SiC powder size distributions and the sublimation behavior during physical vapor transport growth of SiC in a 75 mm and 100 mm crystal processing configuration. The evolution of the source material as well a...

  • Article
  • Open Access
4 Citations
1,648 Views
13 Pages

Growth and Performance of Perovskite Semiconductor CsPbX3 (X = Cl, Br, I, or Mixed Halide) for Detection and Imaging Applications

  • R. Hawrami,
  • L. Matei,
  • E. Ariesanti,
  • V. Buliga,
  • H. Parkhe,
  • A. Burger,
  • J. Stewart,
  • A. Piro,
  • F. De Figueiredo and
  • D. E. Wolfe
  • + 3 authors

1 November 2024

The material family halide perovskites has been critical in recent room-temperature radiation detection semiconductor research. Cesium lead bromide (CsPbBr3) is a halide perovskite that exhibits characteristics of a semiconductor that would be suitab...

  • Review
  • Open Access
30 Citations
8,736 Views
18 Pages

Zirconate Pyrochlore Frustrated Magnets: Crystal Growth by the Floating Zone Technique

  • Monica Ciomaga Hatnean,
  • Claudia Decorse,
  • Martin R. Lees,
  • Oleg A. Petrenko and
  • Geetha Balakrishnan

11 July 2016

This article reviews recent achievements on the crystal growth of a new series of pyrochlore oxides—lanthanide zirconates, which are frustrated magnets with exotic magnetic properties. Oxides of the type A 2 B 2 O 7 (where A...

  • Article
  • Open Access
10 Citations
2,982 Views
14 Pages

30 October 2020

Spermatogenesis is the process of spermatogonial stem cell (SSC) proliferation and differentiation to generate sperm. This process is regulated by cell–cell interactions between Sertoli cells and developing SSCs by autocrine/paracrine and endoc...

  • Article
  • Open Access
2 Citations
2,954 Views
29 Pages

10 December 2023

Germ line development and the origin of the primordial germ cells (PGCs) are very variable and may occur across a range of developmental stages and in several developmental contexts. In establishing and maintaining germ line, a conserved set of genes...

  • Article
  • Open Access
15 Citations
4,883 Views
14 Pages

Molecular Cloning and Sexually Dimorphic Expression Analysis of nanos2 in the Sea Urchin, Mesocentrotus nudus

  • Jian Zhang,
  • Xiao Han,
  • Jin Wang,
  • Bing-Zheng Liu,
  • Jin-Liang Wei,
  • Wei-Jie Zhang,
  • Zhi-Hui Sun and
  • Ya-Qing Chang

Sea urchin (Mesocentrotus nudus) is an economically important mariculture species in China and the gonads are the solely edible parts to human. The molecular mechanisms of gonad development have attracted increasing attention in recent years. Althoug...

  • Article
  • Open Access
6 Citations
4,281 Views
20 Pages

Coral Tissue Regeneration and Growth Is Associated with the Presence of Stem-like Cells

  • Jonathan Levanoni,
  • Amalia Rosner,
  • Ziva Lapidot,
  • Guy Paz and
  • Baruch Rinkevich

17 February 2024

Members of the Cnidaria phylum were studied for centuries to depict the source of their unprecedented regeneration capacity. Although adult stem cells (ASCs) have been recognized in tissue growth/regeneration in many hydrozoans, there has not been an...

  • Article
  • Open Access
10 Citations
3,648 Views
11 Pages

Simulation and Experiment for Growth of High-Quality and Large-Size AlN Seed Crystals by Spontaneous Nucleation

  • Zuoyan Qin,
  • Wenhao Chen,
  • Danxia Deng,
  • Zhenhua Sun,
  • Baikui Li,
  • Ruisheng Zheng and
  • Honglei Wu

15 July 2020

Seed crystals are the prerequisite for the growth of high quality and large size aluminum nitride (AlN) single crystal boules. The physical vapor transport (PVT) method is adopted to grow AlN seed crystal. However, this method is not available in nat...

  • Article
  • Open Access
18 Citations
4,253 Views
16 Pages

Organotypic Culture of Testicular Tissue from Infant Boys with Cryptorchidism

  • Danyang Wang,
  • Simone Hildorf,
  • Elissavet Ntemou,
  • Linn Salto Mamsen,
  • Lihua Dong,
  • Susanne Elisabeth Pors,
  • Jens Fedder,
  • Erik Clasen-Linde,
  • Dina Cortes and
  • Claus Yding Andersen
  • + 1 author

Organotypic culture of human fetal testis has achieved fertilization-competent spermatids followed by blastocysts development. This study focuses on whether the organotypic culture of testicular tissue from infant boys with cryptorchidism could suppo...

  • Article
  • Open Access
22 Citations
3,420 Views
18 Pages

Significant Benefits of Nanoparticles Containing a Necrosis Inhibitor on Mice Testicular Tissue Autografts Outcomes

  • Federico Del Vento,
  • Maxime Vermeulen,
  • Bernard Ucakar,
  • Jonathan Poels,
  • Anne des Rieux and
  • Christine Wyns

20 November 2019

Fertility preservation for prepubertal boys relies exclusively on cryopreservation of immature testicular tissue (ITT) containing spermatogonia as the only cells with reproductive potential. Preclinical studies that used a nude mice model to evaluate...

  • Article
  • Open Access
17 Citations
3,092 Views
13 Pages

26 February 2021

Spermatogenesis is a complex process, in which spermatogonial cells proliferate and differentiate in the seminiferous tubules of the testis to generate sperm. This process is under the regulation of endocrine and testicular paracrine/autocrine factor...

  • Article
  • Open Access
11 Citations
5,343 Views
10 Pages

Crystal Growth of Quantum Magnets in the Rare-Earth Pyrosilicate Family R2Si2O7 (R = Yb, Er) Using the Optical Floating Zone Method

  • Harikrishnan S. Nair,
  • Tim DeLazzer,
  • Tim Reeder,
  • Antony Sikorski,
  • Gavin Hester and
  • Kate A. Ross

7 April 2019

We report on the crystal growth of rare-earth pyrosilicates, R 2Si 2O 7 for R = Yb and Er using the optical floating zone method. The grown crystals comprise members from the family of pyrosilicates where the rare-earth atoms form a dis...

  • Article
  • Open Access
15 Citations
4,054 Views
16 Pages

Involvement of Cytokines and Hormones in the Development of Spermatogenesis In Vitro from Spermatogonial Cells of Cyclophosphamide-Treated Immature Mice

  • Ronnie Solomon,
  • Ali AbuMadighem,
  • Joseph Kapelushnik,
  • Bat-Chen Amano,
  • Eitan Lunenfeld and
  • Mahmoud Huleihel

7 February 2021

Aggressive chemotherapy treatment may lead to male infertility. Prepubertal boys do not produce sperm at this age, however, they have spermatogonial stem cells in their testes. Here, we examined the effect of intraperitoneal injection of cyclophospha...

  • Article
  • Open Access
1 Citations
2,662 Views
13 Pages

Frustrated Magnet Mn3Al2Ge3O12 Garnet: Crystal Growth by the Optical Floating Zone Method

  • Manisha Islam,
  • Monica Ciomaga Hatnean,
  • Geetha Balakrishnan and
  • Oleg A. Petrenko

25 February 2023

Mn3Al2Ge3O12 is a member of the garnet family of compounds, A3B2(CO4)3, whose magnetic properties are affected by a high degree of geometrical frustration. The magnetic frustration is at the origin of the intriguing magnetic properties that these mat...

  • Article
  • Open Access
36 Citations
4,767 Views
13 Pages

Identification of Premeiotic, Meiotic, and Postmeiotic Cells in Testicular Biopsies Without Sperm from Sertoli Cell-Only Syndrome Patients

  • Maram Abofoul-Azab,
  • Eitan Lunenfeld,
  • Eliahu Levitas,
  • Atif Zeadna,
  • Johnny S. Younis,
  • Shalom Bar-Ami and
  • Mahmoud Huleihel

Sertoli cell-only syndrome (SCOS) affects about 26.3–57.8% of azoospermic men, with their seminiferous tubules containing only Sertoli cells. Recently, it was reported that testicular biopsies from nonobstructive azoospermic (NOA) patients contained...