381 research outputs found

    Interface originated modification of electron-vibration coupling in resonant photoelectron spectroscopy

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    We present a comprehensive study of the photon energy (hνh \nu) dependent line-shape evolution of molecular orbital signals of large π\pi-conjugated molecules by resonant photoelectron spectroscopy (RPES). A comparison to RPES data of small molecules suggests that the excitation into different vibrational levels on the intermediate state potential energy surface of the electronic excitation is responsible for the observed effect. In this simplified picture of electron-vibration couping the character of the potential energy surfaces involved in the RPES process determines the line-shape of the molecular orbital signal for a particular hνh \nu. We use the sensitivity of this effect to probe the influence of different interfaces on the electron-vibration coupling in the investigated systems. The magnitude of the variation in line-shape throughout the particular hνh \nu region allows to reveal significant differences within the physisorptive regime

    Employer Attitudes and Perceptions of Job Preparedness of Recent Iowa State University Horticulture Graduates

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    The purpose of this study was to evaluate the attitudes and perceptions of employers who have recently hired Iowa State University (ISU) Department of Horticulture graduates in regard to the graduates\u27 preparedness when entering the workforce and their abilities to complete job responsibilities. A 70-question survey instrument was distributed electronically to 107 employers who hired ISU Department of Horticulture students who graduated from spring semester 2004 through summer session 2007. A majority of the survey questions was directly related to expected learner outcomes from the undergraduate curriculum. These outcomes related to abilities in professional skills (19 questions) and general horticulture (six questions). Twenty-four questions asked employers to rank the importance of skills in the areas of general horticulture and business, at 12 questions each. A final set of nine questions asked employers to rank the importance of work experience, attitude, and job preparedness. The response rate was 45.8%. Results showed that 52.5% of employers felt graduates were more than adequately to exceptionally well prepared for the position for which they were hired, and another 42.5% felt students were adequately prepared. Overall, employers ranked graduates abilities in general horticulture (4.22) and professional skills (4.24) as good to excellent on a scale of 1 to 5 (1 = very poor, 2 = poor, 3 = fair, 4 = good, 5 = excellent). Employers ranked all 12 of the general horticulture skills with an average to above average importance (4.26), and the 12 business skills with a slightly lower average ranking (3.84) on a scale of 1 to 5 (1 = not important, 2 = below average importance, 3 = average importance, 4 = above average importance, 5 = very important). In the final group of questions related to work experience, attitude, and job preparedness, employers ranked “good work ethic” as the most important skill, giving it an 4.97 on a 1 to 5 scale (1 = not important, 5 = very important). The remaining eight questions averaged 3.83 on the 1 to 5 scale. Results from this research will be used to modify the existing curriculum and expected learner outcomes to better prepare ISU horticulture graduates entering the workforce

    Evaluation of Selected Teff ([Eragrostis Tef (Zucc.) Trotter]) Varieties in Oklahoma

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    We evaluated the performance of 15 varieties of teff in the greenhouse and the field in 2010 and 2011. Field studies were conducted at Lake Carl Blackwell and Stillwater Agronomy Research Station, Stillwater, OK, while greenhouse studies were established in a greenhouse facility located at Agronomy Research Station, Stillwater, OK. The variables collected included plant height, plant biomass, and seed weight from each variety. Data were subjected to statistical analysis using ANOVA in SAS. We found two varieties that performed well for both seed and biomass in the greenhouse. Variety Dz-01-974 performed in the top 5 in all aspects in the greenhouse. In the field, variety Dz-01-974 would be recommended for both seed and biomass production and the variety Kuncho would be recommended for biomass productionDepartment of Plant and Soil Science

    Dry friction and wear of self-lubricating carbon-nanotube-containing surfaces

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    The unfavorable environmental conditions of certain tribological systems, such as operation at high temperatures or under vacuum, set the need to replace liquid with solid lubricants. Multi-Wall-Carbon Nanotubes (MWCNTs) have been emphasized as a very effective solid lubricant. The particles have been used to create self-lubricating materials by acting as reinforcement phase in composites or as solid-lubricant coating that works in conjunction with textured surfaces to prevent the removal of particles from the contact. However, both approaches are restricted to some extent. In the case of composites, the solid lubricant concentration is limited so as not to influence the mechanical stability of the final component. For coated surface structures, the textured surfaces can degrade during the experiment. The present study focuses on the combination of these approaches in order to create enhanced self-lubricating surfaces with MWCNTs as the solid lubricant. A custom-made ring-on-block tribometer is used to study the behavior of laser textured MWCNT-coated and MWCNT-reinforced nickel matrix composites under the conditions of unidirectional sliding in conformal contact. It is shown that the combination of both approaches allows for a maximum 4-fold reduction in friction and a 115-fold reduction in wear rate compared to the reference. Additionally, the lubrication mechanism of the MWCNTs is investigated in more detail and a structural degradation model of the mechanically stressed MWCNTs is proposed. Our results highlight the integrated solution as a suitable approach for self-lubricating surfaces subjected to unidirectional sliding

    Estrogen and Progesterone hormone receptor expression in oral cavity cancer

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    Recent studies have shown an increase in the incidence of oral squamous cell carcinoma (OSCC) in younger patients. The hypothesis that tumors could be hormonally induced during pregnancy or in young female patients without the well-known risk factors alcohol or tobacco abuse seems to be plausible. Estrogen Receptor alpha (ER?) and Progesterone Receptor (PR) expression were analyzed in normal oral mucosa (n=5), oral precursor lesions (simple hyperplasia, n=11; squamous intraepithelial neoplasia, SIN I-III, n=35), and OSCC specimen. OSCCs were stratified in a young female (n=7) study cohort and older patients (n=46). In the young female study cohort three patients (n=3/7) developed OSCC during or shortly after pregnancy. Breast cancer tissues were used as positive control for ER? and PR expression. ER? expression was found in four oral precursor lesions (squamous intraepithelial neoplasia, SIN I-III, n=4/35, 11%) and in five OSCC specimen (n=5/46, 11%). The five ER? positive OSCC samples were older male patients. All patients within the young female study cohort were negatively stained for both ER? and PR. ER expression could be regarded as a seldom risk factor for OSCC. PR expression seems to be not relevant for the development of OSCC

    Randomized, Double-Blind Trial of the Effect of Fluid Composition on Electrolyte, Acid-Base, and Fluid Homeostasis in Patients Early After Subarachnoid Hemorrhage

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    Background: Hyper- and hyponatremia are frequently observed in patients after subarachnoidal hemorrhage, and are potentially related to worse outcome. We hypothesized that the fluid regimen in these patients is associated with distinct changes in serum electrolytes, acid-base disturbances, and fluid balance. Methods: Thirty-six consecutive patients with SAH were randomized double-blinded to either normal saline and hydroxyethyl starch dissolved in normal saline (Voluven®; saline) or balanced crystalloid and colloid solutions (Ringerfundin® and Tetraspan®; balanced, n=18, each) for 48h. Laboratory samples and fluid balance were evaluated at baseline and at 24 and 48h. Results: Age [57±13years (mean±SD; saline) vs. 56±12years (balanced)], SAPS II (38±16 vs. 34±17), Hunt and Hess [3 (1-4) (median, range) vs. 2 (1-4)], and Fischer scores [3.5 (1-4) vs. 3.5 (1-4)] were similar. Serum sodium, chloride, and osmolality increased in saline only (p≤0.010, time-group interaction). More patients in saline had Cl >108mmol/L [16 (89%) vs. 8 (44%); p=0.006], serum osmolality >300mosmol/L [10 (56%) vs. 2 (11%); p=0.012], a base excess 1,500mL during the first 24h [11 (61%) vs. 5 (28%); p=0.046]. Hyponatremia and hypo-osmolality were not more frequent in the balanced group. Conclusions: Treatment with saline-based fluids resulted in a greater number of patients with hyperchloremia, hyperosmolality, and positive fluid balance >1,500mL early after SAH, while administration of balanced solutions did not cause more frequent hyponatremia or hypo-osmolality. These results should be confirmed in larger studie

    Effect of laser soldering irradiation on covalent bonds of pure collagen

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    Laser tissue welding and soldering is being increasingly used in the clinical setting for defined surgical procedures. The exact induced changes responsible for tensile strength are not yet fully investigated. To further improve the strength of the bonding, a better understanding of the laser impact at the subcellular level is necessary. The goal of this study was to analyze whether the effect of laser irradiation on covalent bonding in pure collagen using irradiances typically applied for tissue soldering. Pure rabbit and equine type I collagen were subjected to laser irradiation. In the first part of the study, rabbit and equine collagen were compared using identical laser and irradiation settings. In the second part of the study, equine collagen was irradiated at increasing laser powers. Changes in covalent bonding were studied indirectly using the sodium dodecylsulfate polyacrylamide gel electrophoresis (SDS-PAGE) technique. Tensile strengths of soldered membranes were measured with a calibrated tensile force gauge. In the first experiment, no differences between the species-specific collagen bands were noted, and no changes in banding were found on SDS-PAGE after laser irradiation. In the second experiment, increasing laser irradiation power showed no effect on collagen banding in SDS-PAGE. Finally, the laser tissue soldering of pure collagen membranes showed virtually no determinable tensile strength. Laser irradiation of pure collagen at typical power settings and exposure times generally used in laser tissue soldering does not induce covalent bonding between collagen molecules. This is true for both rabbit and equine collagen proveniences. Furthermore, soldering of pure collagen membranes without additional cellular components does not achieve the typical tensile strength reported in native, cell-rich tissues. This study is a first step in a better understanding of laser impact at the molecular level and might prove useful in engineering of combined collagen-soldering matrix membranes for special laser soldering application

    Letter from NY Law Faculty in Support of Diploma Privilege

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    For more information, please refer to Karen Sloan\u27s article, Hundreds of New York Law Professors Endorse Emergency Diploma Privilege, published by the New York Law Journal and appearing on Law.com on July 22, 2020. Additional Signatories: Susan Abraham (New York Law School), Michelle Adams (Benjamin N. Cardozo School of Law), Miriam Albert (Maurice A. Deane School of Law at Hofstra University), Jose E. Alvarez (New York University School of Law), Claudia Angelos (New York University Law School), Deborah Archer (New York University Law School), Jennifer Arlen (New York University Law School), Anna Arons (New York University Law School), Jonathan Askin (Brooklyn Law School), Barbara L. Atwell (Elisabeth Haub School of Law at Pace University), Aditi Bagchi (Fordham University School of Law), Rachel Barkow (New York University Law School), Melynda Barnhart (New York Law School), John Q. Barrett (St. John’s University School of Law), Christine P. Bartholomew (University at Buffalo School of Law), Mark Bartholomew (University at Buffalo School of Law), Jennifer Baum (St. John’s University School of Law), Christopher Beauchamp (Brooklyn Law School), Debra Bechtel (Brooklyn Law School), Edith Beerdsen (New York University School of Law), Peter A. Bell (Syracuse University College of Law), Lenni Benson (New York Law School), Paula Berg (City University of New York School of Law), Anya Bernstein (University at Buffalo School of Law), Beryl Blaustone (City University of New York School of Law) Susan Block-Lieb Cooper (Fordham University School of Law), Pamela Bookman (Fordham University School of Law), Rebecca M. Bratspies (City University of New York School of Law), Ray Brescia (Albany Law School), Richard Briffault (Columbia Law School), William Brooks (Touro College Jacob D. Fuchsberg Law Center), Emily Brown (Syracuse University College of Law), James J. Brudney (Fordham University School of Law), Christopher Buccafusco (Benjamin N. Cardozo School of Law), Jessica Bulman-Pozen Betts (Columbia Law School), Keith Bybee (Syracuse University College of Law), Gina M. Calabrese (St. John’s University School of Law), Janet M. Calvo (City University of New York School of Law), Ann Cammett (City University of New York School of Law) Juli Campagna (Maurice A. Deane School of Law at Hofstra University), Bennett Capers (Fordham University School of Law), Stacy Caplow (Brooklyn Law School), Rosa Castello (St. John’s University School of Law), Oscar G. Chase (New York University School of Law), Asima Chaudhary (City University of New York School of Law), Nina Chernoff (City University of New York School of Law), Elaine Chiu (St. John’s University School of Law), Wilfred U. Codrington III (Brooklyn Law School), Jim Cohen (Fordham University School of Law), Jeffrey M. Colon (Fordham University School of Law), Jordana Confino (Fordham University School of Law), George W. Conk (Fordham University School of Law), Elizabeth B. Cooper (Fordham University School of Law), Briane Cornish (Brooklyn Law School), Bridget J. Crawford (Elisabeth Haub School of Law at Pace University), Laura E. Cunningham (Benjamin N. Cardozo School of Law), Noel B. Cunningham (New York University School of Law), Jason J. Czarnezki (Elisabeth Haub School of Law at Pace University), Matthew D\u27Amore (Cornell Law School), Alina Das (New York University School of Law), Lisa Davis (City University of New York School of Law), Christian C. Day (Syracuse University College of Law), Brett M. Dignam (Columbia Law School), Rebekah Diller (Benjamin N. Cardozo School of Law), Shane Dizon (Brooklyn Law School), Laura Dooley (Touro College Jacob D. Fuchsberg Law Center), Ryan Dooley (City University of New York School of Law), David Dorfman (Elisabeth Haub Law School at Pace University), Doron Dorfman (Syracuse University College of Law), Helen Agnes Drew (University at Buffalo School of Law), Catharine Du Bois (Brooklyn Law School), Catherine Baylin Duryea (St John\u27s University School of Law), Robin Effron (Brooklyn Law School), Elizabeth F. Emens (Columbia Law School), Richard A. Epstein (New York University School of Law), Howard Erichson (Fordham University School of Law), Jeffrey Fagan (Columbia Law School), Golnaz Fakhimi (City University of New York School of Law), John D. Feerick (Fordham University School of Law), Dave Fields (City University of New York School of Law), Martin Flaherty (Fordham University School of Law), Katherine Franke (Columbia Law School), Eric M. Freedman (Maurice A. Deane School of Law at Hofstra University), Barry Friedman (New York University School of Law), Jeanne Fromer (New York University School of Law), Kellen Funk (Columbia Law School), Raquel Gabriel (City University of New York School of Law), Paolo Galizzi (Fordham University School of Law), James A. Gardner (University at Buffalo School of Law), David Garland (New York University School of Law), Mark A. Geistfeld (New York University School of Law), Philip M. Genty (Columbia Law School), Doni Gewirtzman (New York Law School), Shubha Ghosh (Syracuse University College of Law), Maeve Glass (Columbia Law School), Cynthia Godsoe (Brooklyn Law School), Rachel T. Goldberg (Cornell Law School), Elizabeth Goldman (Benjamin N. Cardozo School of Law), Julie Goldscheid (City University of New York School of Law), Ann Goldweber (St. John\u27s University School of Law), Natalie Gomez-Velez (City University of New York School of Law), Jennifer Gordon (Fordham University School of Law), Lauryn Gouldin (Syracuse University College of Law), Elayne E. Greenberg (St. John’s University School of Law), Michelle Greenberg-Kobrin (Benjamin N. Cardozo School of Law), Abner Greene (Fordham University School of Law), Jamal Greene (Columbia Law School), Lissa Griffin (Elisabeth Haub School of Law at Pace University), Jill Gross (Elisabeth Haub School of Law at Pace University), Lisa Grumet (New York Law School), Martin Guggenheim (New York University School of Law), Jennifer A. Gundlach (Maurice A. Deane School of Law at Hofstra University), Hugh C. Hansen (Fordham University School of Law), Bernard E. Harcourt (Columbia Law School), Jonathan Harris (New York University School of Law), Melina Healey (Touro College Jacob D. Fuchsberg Law Center), Julia Hernandez (City University of New York School of Law), Tanya Hernandez (Fordham University School of Law), Helen Hershkoff (New York University School of Law), Randy Hertz (New York University School of Law), Robert A. Heverly (Albany Law School), Michael F. Higgins (University at Buffalo School of Law), Tracy Higgins (Fordham University School of Law), Alexis Hoag (Columbia Law School), Martha R. Hochberger (New York Law School), Babe Howell (City University of New York School of Law), Rob Howse (New York University School of Law), Bert I. Huang (Columbia Law School), Carmen Huertas (City University of New York School of Law), Kyron Huigens (Benjamin N. Cardozo School of Law), Tarek Z. Ismail (City University of New York School of Law), Conrad Johnson (Columbia Law School), Paula C. Johnson (Syracuse University College of Law), Kathryn Judge (Columbia Law School), Mitchell Kane (New York University School of Law), Arlene S. Kanter (Syracuse University College of Law), Ramzi Kassem (City University of New York School of Law), Constantine N. Katsoris (Fordham University School of Law), Avery Katz (Columbia Law School), Eileen Kaufman (Touro College Jacob D. Fuchsberg Law Center), Florence Kerner (City University of New York School of Law), Jocelyn Getgen Kestenbaum (Benjamin N. Cardozo School of Law), Richard Klein (Touro College Jacob D. Fuchsberg Law Center), Kate Klonick (St. John’s University School of Law), Lewis Kornhauser (New York University School of Law), Minna Kotkin (Brooklyn Law School), Anita S. Krishnakumar (St. John’s University School of Law), Rebecca M. Kysar (Fordham University School of Law), Sarah Lamdan (City University of New York School of Law), Christine Lazaro (St. John’s University School of Law), Donna Lee (City University of New York School of Law), Nicole Lefton (Maurice A. Deane School of Law at Hofstra University), Arthur S. Leonard (New York Law School), Michael Lewyn (Touro College Jacob D. Fuchsberg Law Center), Theo Liebmann (Maurice A. Deane School of Law at Hofstra University), Edward Lloyd (Columbia Law School), Stephen Loffredo (City University of New York School of Law), Grace M. Lozito (Fordham University School of Law), Shirley Lung (City University of New York School of Law), Mary Lynch (Albany Law School), James Macleod (Brooklyn Law School), Kevin Maillard (Syracuse), Matthew Main (City University of New York School of Law), Deborah C. Malamud (New York University School of Law), Michael W. Martin (Fordham University School of Law), Princess Masilungan (City University of New York School of Law), Camille Massey (City University of New York School of Law), Nancy Maurer (Albany Law School), Andrea McArdle (City University of New York School of Law), Justin McCrary (Columbia Law School), Thomas M. McDonnell (Elisabeth Haub School of Law at Pace University), Kevin McElroy (Maurice A. Deane School of Law at Hofstra University), Peggy McGuinness (St. John’s University School of Law), Estelle M. McKee (Cornell Law School), Mary Helen McNeal (Syracuse University College of Law), Suzette M. Melendez (Syracuse University College of Law), Gillian Metzger (Columbia Law School), Chi Adanna Mgbako (Fordham University School of Law), Flora Midwood (Brooklyn Law School), Kathryn Miller (Benjamin N. Cardozo School of Law), Meredith R. Miller (Touro College Jacob D. Fuchsberg Law Center), Joshua Mitts (Columbia Law School), Kate Mogulescu (Brooklyn Law School), Laura Mott (City University of New York School of Law), Elora Mukherjee (Columbia Law School), Erin Murphy (New York University School of Law), Jessica R. Murray (Syracuse University College of Law), Justin Murray (New York Law School), Melissa Murray (New York University School of Law), Michael B. Mushlin (Elisabeth Haub School of Law at Pace University), Athena D. Mutua (University at Buffalo School of Law), Smita Narula (Elisabeth Haub School of Law at Pace University), Lindsay Nash (Benjamin N. Cardozo School of Law), Robert Nassau (Syracuse University College of Law), Burt Neuborne (New York University School of Law), Elizabeth Nevins (Maurice A. Deane School of Law at Hofstra University), Leslie Newman (Benjamin N. Cardozo School of Law), Jacqueline Nolan-Haley (Fordham University School of Law), Tracy L. Norton (Touro College Jacob D. Fuchsberg Law Center), Anthony O\u27Rourke (University at Buffalo School of Law), Jonathan Oberman (Benjamin N. Cardozo School of Law), Ngozi Okidegbe (Benjamin N. Cardozo School of Law), Judith Olin (University at Buffalo School of Law), Nancy K. Ota (Albany Law School), Jason Parkin (City University of New York School of Law), G. Michael Parsons (New York University School of Law), Frank A. Pasquale (Brooklyn Law School), Russell G. Pearce (Fordham University School of Law), Deborah Pearlstein (Benjamin N. Cardozo School of Law), Talia Peleg (City University of New York School of Law), Katharina Pistor (Columbia Law School), Margot Pollans (Elisabeth Haub School of Law at Pace University), Karen Porter (Brooklyn Law School), David Pozen (Columbia Law School), Edward A. Purcell, Jr. (New York Law School), Paul Radvany (Fordham University School of Law), Aziz Rana (Cornell Law School), Martha Rayner (Fordham University School of Law), LaVonda Reed (Syracuse University College of Law), David J. Reiss (Brooklyn Law School), Alice Ristroph (Brooklyn Law School), Allie Robbins (City University of New York School of Law), Nicholas A. Robinson (Eisabeth Haub School of Law at Pace University), Ruthann Robson (City University of New York School of Law), Sarah Rogerson (Albany Law School), Joseph A. Rosenberg (City University of New York School of Law), Merrick Rossein (City University of New York School of Law), Leif Rubinstein (Touro College Jacob D. Fuchsberg Law Center), David Rudenstine (Benjamin N. Cardozo School of Law), Laura Sager (New York University School of Law), Rosemary Salomone (St. John’s University School of Law), Leslie Salzman (Benjamin N. Cardozo School of Law), Faraz Sanei (New York University School of Law), Carol Sanger (Columbia Law School), Margaret L. Satterthwaite (New York University School of Law), John Henry Schlegel (University at Buffalo School of Law), Elizabeth Schneider (Brooklyn Law School), Jeanne Schroeder (Benjamin N. Cardozo School of Law), Jason Schultz (New York University School of Law), Beth G. Schwartz (Fordham University School of Law), Elizabeth Scott (Columbia Law School), Helen S. Scott (New York University School of Law), Robert E Scott (Columbia Law School), Anthony Sebok (Benjamin N. Cardozo School of Law), Courtney Selby (St. John’s University School of Law), Rena Seplowitz (Touro College Jacob D. Fuchsberg Law Center), John Sexton (New York University School of Law), Houman Shadab (New York Law School), Colleen Shanahan (Columbia Law School), Jeremy Sheff (St. John’s University School of Law), Theodore Silver (Touro College Jacob D. Fuchsberg Law Center), Jocelyn Simonson (Brooklyn Law School), Janet Sinder (Brooklyn Law School), Charisa Smith (City University of New York School of Law), Rachel H. Smith (St. John’s University School of Law), Jeff Sovern (St. John’s University School of Law), Jane M. Spinak (Columbia Law School), Christopher Sprigman (New York University School of Law), Edward Stein (Benjamin N. Cardozo School of Law), John Paul Steines Jr. (New York University School of Law), Jed Stiglitz (Cornell Law School), Katherine Strandburg (New York University School of Law), Susan Sturm (Columbia Law School), Daniel E Subotnik (Touro College Jacob D. Fuchsberg Law Center), Deborah Sundquist O’Malley (Syracuse University College of Law), Olivier Sylvain (Fordham University School of Law), Mary Szto (Syracuse University College of Law), Mateo Taussig-Rubbo (University at Buffalo School of Law), Nelson Tebbe (Cornell Law School), Ruti Teitel (New York Law School), Leslie Y. Garfield Tenzer (Elisabeth Haub School of Law at Pace University), Maria Termini (Brooklyn Law School), Steven Thel (Fordham University School of Law), Kendall Thomas (Columbia University), Monica Todd (Syracuse University), Erin Tomlinson (City University of New York School of Law), Cora True-Frost (Syracuse University College of Law), Jacob Victor (Albany Law School), Rachel Vorspan (Fordham University School of Law), Amy Wallace (New York Law School), Matthew Wansley (Benjamin N. Cardozo School of Law), Ettie Ward (St. John’s University School of Law), G. Ray Warner (St. John’s University School of Law), Daniel Warshawsky (New York Law School), Ian Weinstein (Fordham University School of Law), Samuel N. Weinstein (Benjamin N. Cardozo School of Law), Richard H. Weisberg (Benjamin N. Cardozo School of Law), Robert Wertheimer (Cornell Law School), John Whitlow (City University of New York School of Law), Andrew Williams (New York University School of Law), Rev. Dr. Yvette Wilson-Barnes (City University of New York School of Law), Charles M. Yablon (Benjamin N. Cardozo School of Law), Ellen Yaroshefsky (Maurice A. Deane School of Law at Hofstra University), Steven Zeidman (City University of New York School of Law), Benjamin C. Zipursky (Fordham University School of Law
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