David Healy

ORCID: 0000-0003-2685-1498
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About
Contact & Profiles
Research Areas
  • earthquake and tectonic studies
  • Seismic Imaging and Inversion Techniques
  • Rock Mechanics and Modeling
  • Ovarian function and disorders
  • Reproductive Biology and Fertility
  • Geological and Geochemical Analysis
  • Endometriosis Research and Treatment
  • Hydrocarbon exploration and reservoir analysis
  • Hydraulic Fracturing and Reservoir Analysis
  • Assisted Reproductive Technology and Twin Pregnancy
  • Drilling and Well Engineering
  • Ovarian cancer diagnosis and treatment
  • Uterine Myomas and Treatments
  • Seismic Waves and Analysis
  • High-pressure geophysics and materials
  • Seismology and Earthquake Studies
  • Reproductive System and Pregnancy
  • Geological formations and processes
  • Landslides and related hazards
  • Gynecological conditions and treatments
  • Reproductive Health and Technologies
  • TGF-β signaling in diseases
  • Prenatal Screening and Diagnostics
  • American Constitutional Law and Politics
  • Geotechnical and Geomechanical Engineering

University of Leeds
2025

University of Aberdeen
2015-2024

The University of Melbourne
1989-2024

Monash Medical Centre
1999-2023

University of Manchester
2023

University of Cambridge
2020

The King's College
2020

Mayo Clinic in Florida
2018

Kansas State University
2017

Institute of Geology and Geophysics
2012-2016

Research Article| August 01, 2011 How Does the Continental Crust Get Really Hot? Chris Clark; Clark 1The Institute for Geoscience (TIGeR), Department of Applied Geology, Curtin University, GPO Box U1987 Perth WA 6845, Australia E-mail: c.clark@curtin.edu.au Search other works by this author on: GSW Google Scholar Ian C. W. Fitzsimons; Fitzsimons David Healy; Healy 2School Geosciences, King's College, University Aberdeen Aberdeen, AB24 3UE, UK Simon L. Harley 3Grant Earth Science, The...

10.2113/gselements.7.4.235 article EN Elements 2011-07-25

The patterns of fractures in deformed rocks are rarely uniform or random. Fracture orientations, sizes, and spatial distributions often exhibit some kind order. In detail, relationships may exist among the different fracture attributes, e.g. small dominated by one orientation, larger another. These important because mechanical (e.g. strength, anisotropy) transport fluids, heat) properties rock depend on these attributes patterns. This paper describes FracPaQ, a new open source,...

10.1016/j.jsg.2016.12.003 article EN cc-by Journal of Structural Geology 2016-12-10

Inhibin is an ovarian hormone that inhibits the secretion of follicle-stimulating (FSH) by anterior pituitary gland. Women with granulosa-cell tumors ovary have elevated serum inhibin concentrations, but whether concentrations are increased in women other unknown.

10.1056/nejm199311183292104 article EN New England Journal of Medicine 1993-11-18

Characterising fractures at outcrop for use as analogues to fractured reservoirs can several methods. Four important fracture data collection methods are linear scanline sampling, areal window sampling and circular sampling. In regions of homogeneous networks these adequate characterise patterns analogues, however where heterogeneous, it is more difficult a different approach needed. We develop workflow in region heterogeneous fold thrust belt, which we believe has applicability wide variety...

10.1016/j.jsg.2015.02.001 article EN cc-by Journal of Structural Geology 2015-02-11

Studies of fault rock permeabilities advance the understanding fluid migration patterns around faults and contribute to predictions stability. In this study a new model is proposed combining brittle deformation structures formed during faulting, with flow through pores. It assesses impact faulting on permeability anisotropy porous sandstone, hypothesising that formation related micro-scale will alter host porosity organisation create pathways. Core plugs thin sections were sampled normal...

10.1016/j.jsg.2014.02.008 article EN cc-by Journal of Structural Geology 2014-03-04

We present stress concentration factors at the edges of 3D voids in uniaxial compression. Variations these due to Poisson's ratio host material, void shape, and void-void proximity are explicitly quantified. Voids loaded by a vertical compressive hypothesised fail one or two ways: (1) tension crack development tensile concentrations poles; (2) sides causing wall shear. The this study found using numerical displacement discontinuity method. Equations provided assess modes failure. For thinned...

10.1016/j.jsg.2017.07.013 article EN cc-by Journal of Structural Geology 2017-08-03

Abstract We present a comparative study of crack damage evolution in dry sandstone under both conventional ( σ 1 > 2 = 3 ), and true triaxial ) stress conditions using results from measurements made on cubic samples deformed three orthogonal directions with independently controlled paths. To characterize damage, we measured the changes ultrasonic compressional shear wave velocities principal directions, together bulk acoustic emission (AE) output contemporaneously strain. use to model...

10.1002/2016jb013646 article EN cc-by Journal of Geophysical Research Solid Earth 2017-06-01

Conjugate, or bimodal, fault patterns dominate the geological literature on shear failure. Based Anderson's (1905) application of Mohr-Coulomb failure criterion, these have been interpreted from all tectonic regimes, including normal, strike-slip and thrust (reverse) faulting. However, a fundamental limitation criterion – others that assume faults form parallel to intermediate principal stress, σ2 is only plane strain can result slip conjugate faults. deformation in Earth widely accepted as...

10.1016/j.jsg.2015.08.013 article EN cc-by-nc-nd Journal of Structural Geology 2015-09-03

Ten women with infertility, regular menses, and elevated plasma FSH concentrations after a failed in vitro fertilization attempt were studied throughout spontaneous menstrual cycle. Plasma estradiol, progesterone, inhibin, LH, measured by RIA on days 1, 8, 15, 22 compared the ovarian steroid gonadotropin profiles obtained from seven endocrine-normal women. The hypergonadotropic group not associated significant changes E2 P4, but an increase LH was found (medians of 18 4, 17 6, 7 <3 U/L for...

10.1210/jcem-67-6-1190 article EN The Journal of Clinical Endocrinology & Metabolism 1988-12-01

Evaluation of the long-term health children born using in-vitro fertilization (IVF) provides important information to clinicians and consumers. Until very recently, there have been no published data on incidence cancer in conceived as a result IVF, despite number case reports neuroblastoma fertility drugs. This study used record-linkage cohort design investigate after IVF. The included all conceptions assisted reproductive technologies between 1979 1995 at two clinics Victoria, Australia...

10.1093/humrep/15.3.604 article EN Human Reproduction 2000-03-01

We have compared the time courses of serum inhibin and estradiol responses to ovarian hyperstimulation in patients undergoing vitro fertilization embryo transfer as well their predictive value for outcome intermediate variables pregnancy transfer. Blood samples (n = 749) were collected up 6 days before hCG administration 100 consecutive treatment cycles, which 44 resulted pregnancy, defined by elevated luteal phase beta levels. Inhibin levels increased markedly parallel during highly...

10.1210/jcem-70-2-358 article EN The Journal of Clinical Endocrinology & Metabolism 1990-02-01

Endotoxin-free thymosin fraction 5 elevated corticotropin, beta-endorphin, and cortisol in a dose- time-dependent fashion when administered intravenously to prepubertal cynomolgus monkeys. Two synthetic component peptides of had no acute effects on pituitary function, suggesting that some other were responsible for its corticotropin-releasing activity. In agreement with these observations, total thymectomy juvenile macaques was associated decreases plasma cortisol, beta-endorphin. These...

10.1126/science.6318312 article EN Science 1983-12-23

Journal Article Toward Removing Uterine Fibroids without Surgery: Subcutaneous Infusion of a Luteinizing Hormone-Releasing Hormone Agonist Commencing in the Luteal Phase Get access DAVID L. HEALY, HEALY Search for other works by this author on: Oxford Academic Google Scholar SHEILA R. LAWSON, LAWSON 1Department Obstetrics and Gynecology arid MRC Reproductive Biology Unit, Center Reproductie Biology, University Edinburgh Edinburgh, EH3 9EW United Kingdom MAIRWEN ABBOTT, ABBOTT T. BAIRD, BAIRD...

10.1210/jcem-63-3-619 article EN The Journal of Clinical Endocrinology & Metabolism 1986-09-01
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