Box 14 – Drafts of Publications A - L
Box 15 – Drafts of Publications M - Z
Box 18 – Atlas of Surgical Operations, 3rd Edition – 6th Edition
Box 19 – Atlas of Surgical Operations, 7th Edition
Box 20 – Elliott Carr Cutler and the Cloning of Surgeons
Box 21 – Elliott Carr Cutler and the Cloning of Surgeons
Folder
1
Acute Cholecystilis Chapter by Robert M. Zollinger, Larry Carey
2
Basic and
Clinical Hepatology, Foreword by Robert M. Zollinger, M.D. 3
Beaumont
Article for Pharos 4
Bradley’s
Preface, Complications of Pancreatitis: Medical Surgical Management 5
Chapter for John Brooks’ Surgery of the Pancreas, “Zollinger-Ellison
Syndrome”
6
Chapter
for Butterworth’s Current Views on the Surgery of Gastrinoma in the Post-Cimetidine
Era 7
Chapter
for Controversy in Surgery: Cholangiography 8
Chapter
for Dr. Tompkin’s Book, Principle of Reoperative Surgery 9
Chapter
for Dr. Sirinek’s Current Concept Management, Gastrinoma, 1986 10
Chapter
for Reoperative Surgery by Ronald Tompkins, M.D. 2nd printing 1989 11
Chapter
for Seminar in Oncology for Dr. Mazzaferri (Endocrine Tumors) 12
Cimetidine
Chapter, 1981 13
Common
Problems in Gastrointestinal Surgery, Zollinger Ellison Syndrome Chapter 14
Contemporary
Surgery 15
Contemporary
Surgery, October 1979 16
Diagnosis
and Management of Abdominal Trauma, Lecture Manual 17
Endocrine
Surgery Monograph, Chapter on Zollinger-Ellison Syndrome 18
Fetschrift
for Dr. Richard Marshak. 19
Friesen
Article, Serum Gastrin Levels in Malignant Zollinger-Ellison Syndrome after
Total Gastrectomy and Hypophysectomy 20
Gastrinoma
Chapter for Dr. Scott 21
Gastrinoma,
Current Therapy Series, 1991 22
Gastrinoma,
Current Therapy Series, 1991 23
Gastrinoma,
Research Articles for Current Therapy Series, 1991 24
Gastrinoma,
Research Articles for Current Therapy Series, 1991 25
Geelhood, Glenn W., M.D., F.A.C.S
26
Graduate
Education in the United States, 27
International
Federation of Surgical Colleges, Report to Working Party on Interchange of Young
Surgeons 28
JAMA
Article, In Retrospect 29
Langenbecks
Archiv fur Chirurgie
1
Maingot’s Book: Chapter on Ulcerogenic Tumors of the Pancreas
2
Maingot’s
Book: Chapter on Ulcerogenic Tumors of the Pancreas 3
Medical Art,
Number 20 4
Metabolic
Surgery Textbook, July 1, 1975 5
Murat’s
Foreword: Handbook of Experimental Surgery, 1971 6
Nyhus Chapter,
Zollinger-Ellison Syndrome Update 7
The Pancreas,
Foreword, by Larry Carey, M.D. 8
The Pancreas,
Foreword, by Luis H.T. Pereyra 9
A Practical
Outline for Preparing Medical Talks and Papers 10
Problem in
General Surgery, Zollinger-Ellison Syndrome 1987 11
Problem in
General Surgery, Zollinger-Ellison Syndrome 1987 12
Reoperative
Gastrointestinal Surgery 3rd ed., Foreword by Robert M. Zollinger 13
Research Forum,
Editorial Board, Abstracts, 1986-87 14
Research Forum,
Editorial Board Advisory Meeting, March 28, 1986 15
Research Forum,
Editorial Board Advisory Meeting, June 26, 1986 16
Research Forum,
Editorial Board, Historical Perspective 17
Research Forum,
Editorial Board, Major Papers, 1986-87 18
Research Forum,
Editorial Board, Fall 1987 19
Research Forum,
Editorial Board, Other Inclusions, 1986-87 20
Scientific
Foundations of Family Medicine, Chapter on Zollinger-Ellison Syndrome 21
Secretin
Bioassay Project 22
Surgery of the
Spleen, Chapter by Zollinger and Schwarcz 23
Surgical
Endocrinology: Clinical Syndrome by Stan Friesin, M.D., Chapter 24
Surgical
Techniques Illustrated, Book Review 25
Techniques of
Total Gastrectomy for Eugene Woltering, M.D. 26
Ulcer Data, Klug
and Ellensohn 27
Viewpoint
Article 28
World Journal of
Surgery, Review of Mignon, M.D., et al article 29
Yearbook of
Cancer, Abstract of Zollinger-Ellison Paper, 1980 30
31
Zollinger,
Robert M., M.D., papers presented April-October 1972 F 1
1
A Histological Study of Tumors of the Central Nervous System, April 1929
2
Experimental
Thrombophlebitis and Lymphatic Obstruction of the Lower Limb, April 1929 3
Osteochondritis
of the Growth Centers, August 1930 4
David Tod
Gilliam, December 1930 5
I0PAX, March
1932 6
Brain Tumors, A
Report of the Types Seen in General Practice, August 1932 7
Effects of
Neurobiotic Agent on the Walls of Cysts Experimentally Produced in the Brains of
Dogs, November 1932 8
Experiences with
Encephalography, December 1, 1932 9
Chordoma of the
Third Lumbar Vertebrae, January 1933 10
The Use of
Selerosing Solutions in the Treatments of Cysts and Fistulae, March 1933 11
Effects of
Lumbar Ganglionectomy Upon Repair of Bone, April 1933 12
Case Studies in
Chronic Arachnoiditis, April 1, 1933 13
Observation
Following Distension of the Gallbladder and Common Duct in Man, 1933 14
Aneurysm of the
Internal Carotid Artery, September 1933 15
Similarity of
the Toxic Forms of Thyroid Disease, March 1934 16
Skin Temperature
Reactions Following Removal of the Left Cerebral Hemisphere, June 15, 1934 17
Traumatic
Subdural Hematoma, July 28, 1934 18
Mesenteric
Vascular Occlusion, October 18, 1934 19
Uretero-Intestinal
Anastomoses, November 1934 20
Fundusectomy in
the Treatment of Peptic Ulcer, August 1935 21
Observations of
the Symptomatology of the Cholelithiasis, October 10, 1935 22
Removal of Left
Cerebral Hemisphere, November 1935 23
Significance of
Pain and Vomiting in Cholelithiasis, November 23, 1935 24
Acute
Cholecystitis, June 11, 1936 25
Localization of
Pain Following Faradic Stimulation of the Common Bile Duct, 1936 26
Mass Ligation of
the Pulmonary Hilum with a Silver Band, February 1937 27
Observations of
Carbohydrate Metabolism Following Irradiation of the Pituitary Gland, May 1937 28
Treatment of the
Menopause Syndrome by Irradiation of the Pituitary Gland, August 5, 1937 29
Instrumental
Dilatation of the Papilla of Vater, January 1938 30
The Surgical
Procedures for Biliary Calculi, March 1938 31
The Surgical
Procedure for Total Thyroidectomy, July 1938 32
The Surgical
Aspects of Peptic Ulcer, August 1938 33
The Value of
Blood Diastase in the Diagnosis of Common Duct Stone 34
Surgery of the
Stomach and Duodenum, September 1938 35
Hysterectomy,
November 1938 36
A Method of
Valvuvar Cholecystgastrostomy, January 1940 37
The Effect of
Predigested Food on Experimental Peptic Ulcer, April 1940 38
A Techniques for
High Intestinal Fistula, April 1940 39
Gastric
Resection with Removal of the Fundus in the Treatment of Duodenal Ulcer, July
1940 40
The Postwar
Trends in the Training of the General Surgeon, August 1948 41
Indications for
Surgery in Gall-bladder Diseases, March 1950 42
Cardiotomy into
an Empty Left Ventricle, August 1950 43
Localization of
Referred Pancreatic Pain Induced by Electric Stimulation, October 1950 44
Peritoneal Fluid
Amylase Determinations As An Aid in Diagnosis of Acute Pancreatitis, November
1950 45
Urinary Chloride
Determinations in the Estimation of the Salt Requirements in Surgical Patients,
July 1951 46
The Effect of
ACTH and Cortisone on the Survival of Homologous Skingrafts, September 1951 47
Potassium
Deficits in Surgical Patients, May 1952 48
Critical
Evaluation of Jejunostomy, September 1952 49
The Surgical
Management of Hypersplenism, March 1953 50
Indications for
Surgery in Jaundice, March 1953. 51
Value of Blood
Volume Determinations in Gastrointestinal Disease, March 1953 52
The Problem of
Pancreatitis, February 1954 53
Significance of
Preoperative Weight in the Choice of Operations for Duodenal Ulcer, March 1954 54
Acute
Appendicitis in an Adult with Two Separate Vermiform Appendices, August 1954 55
Pancreatitis,
September 23, 1954 56
Preoperative
Evaluation for Major Surgery, November-December 1954 57
The Diagnosis
and Management of Biliary, Tract Disease, February 10, 1955 58
The Use of Human
Serum Albumin in the Management of Acute Pancreatitis, April 1955 59
Primary Peptic
Ulcerations of the Jejunum Associated with Islet Cell Tumors of the Pancreas,
1955 60
Consideration in
Surgical Treatment for Duodenal Ulcer, February 4, 1956 61
The Acute Abdomen, Medical Aspects, March 1956
62
Surgical Aspects
of Jaundice, June 1956 63
The Spleen 64
Jaundice, August
1957 65
The Changing
Manner of Surgical Education, September 1957 66
Alteration in
the Pancreatic Resistance to Bile in the Pathogenesis of Acute Pancreatitis,
October 1957 67
Cholecystitis
and Choleliathiasis, 1958 68
Late
Postoperative Problems Following Radical Surgery of the Stomach and Pancreas,
March 1958 69
Evaluation of
the Surgical Treatment of Intractable Duodenal Ulcer, October 1958 70
Should All
Gastric Ulcers be Treated Surgically?, November 1958 71
Pancreatic
Endocrine Function and Peptic Ulceration, 1958 72
Surgical
Treatment of Persistent Symptoms Following Cholecystectomy, April 1959 73
Surgery of the
Spleen, July 1959 74
Diagnostic and
Prognostic Factors in Abdominal Trauma, May 1959 75
Patient’s
Comfort, 1959 76
Diagnosis and
Treatment of Pancreatitis, October 1959 77
Surgical
Management of Gastric Ulcer, December 12, 1959 78
Cortisone in the
Treatment of Experimental Acute Pancreatitis, 1959 79
Indications for
Splenectomy, February 1960 80
Ulcerogenic
Tumors of the Pancreas, April 1960 81
Surgery for
Malignant Jaundice, June 1960 82
The Effect of
Hypotension in Obstructive Jaundice, August 1960 83
Endocrine
Adenomas and Peptic Ulcer with Special Reference to Pancreatic Adenomas,
November 1960 84
The Management
of Hernia: All Ages, July 1961 85
Pancreatic
Influences on Gastric Secretions, July 1961 86
Effects of Drugs
on the Gastrointestinal Tract, September 1961 87
An Objective
Test for the Study of Gastric Function in the Postoperative Gastric Patient,
September 1961 88
A Practical
Outline for Preparing Medical Talks and Paper, 1961 89
Effect of
Ethionine on Gastric Secretion, 1961 90
Surgical
Tithing, January-February 1962 91
Origin of the
Ulcerogenic Hormone in Endocrine Induced Ulcer, October 1962 92
Ulcerogenic
Tumor of the Pancreas and Management of Pancreatitis, November 25, 1962 93
Electron
Microscopic Study of Ulcerogenic Tumors of the Pancreas, 1962 94
Intestinal
Obstruction, February 1963 95
A Long Term
Evaluation of Two Conservative Surgical Procedures for Duodenal Ulcer, March
1963 96
Technic of
Vagotomy, Hemigastrectomy and Billroth I Anastomosis, March 1963 97
Medical and
Surgical Management of Duodenal Ulcer, March 1963 98
Relation of
Antrum to Pancreatic Induced Gastric Hypersecretion, July 1963 99
Observations on
the Relationship of the Pancreas to Peptic Ulcer, October 1963 100
Ulcerogenic
Tumor of the Pancreas, November 1963 101
Diagnosis and
Management of Intestinal Obstruction, January 1964 102
Prevention of
Ulcer after Pancreatic Surgery, February 1964 103
Papers of the
Society for Surgery of the Alimentary Tract, February 1964 104
Duodenal Ulcer
in Military Patients, April 1964 105
Spleen in
Traumatic Medicine and Surgery for the Attorney, 1964 106
Surgical
Treatment of Lymphoma 107
The Illustration
of Medical Lectures, July 1964 108
Histamine
Metabolism in Pancreatic-Induced Hypersecretion, 1964 109
Cholecystectomy,
October 12, 1964 110
Ulcerogenic
Tumors of the Pancreas, October 19, 1964 111
The Small and
Large Intestine 112
The Small and
Large Intestine 113
The Image of
Military Medicine, February 1965 114
Surgical
Management of Benign Lesions of the Colon, March 1965 115
The Surgeon’s
Viewpoint 116
The Senior
Surgeon’s Responsibility, September 1965 117
Surgery of
Endocrine Glands with Emphasis on Diseases of the Thyroid, October 1965 118
Clinico-Pathological
Conference, 1965 119
Ulcerogenic
Tumors of the Pancreas, February 1966 120
Ulcerogenic
Tumors of the Pancreas, 1966 121
Relationship of
the Pancreas and Other Endocrine Glands to Peptic Ulcer, 1966 122
The Principles
of Gastric Resection, October 1966 123
Observation on
Pre and Postoperative Care, November 1966 124
Hormones
Affecting Gastric Secretion, March-April 1967 125
Gastrin
Antibodies: Induction, Demonstration, and Specificity, April 21, 1967 126
Role of Biliary
Phospholipids in the Formation of Human Gallstones, 1967 127
Diagnosis of
Ulcerogenic Tumor of the Pancreas by Bioassay, June 1967 128
Reflections on
the Ulcerogenic Syndrome, August 1967 129
Zollinger-Ellison
Syndrome Comes of Age, April 29, 1968 130
Prolonged
Remission of Diarrhea due to Non-Beta Islet Cell Tumor of the Pancreas by
Radiotherapy, June 1968 131
Identification
of the Diarrheogenic Hormone Associated with Non-Beta Islet Cell Tumors of the
Pancreas, September 1968 132
Zollinger-Ellison
Syndrome, October 7, 1968 133
Reflections on
Gallstone, March 1969 134
Non-Insulin-Secreting
Islet Cell Tumors, 1969 135
Transplantation
Pancreatiques, April 26, 1969 136
Colonic
Obstruction 137
Straight Talk
About Peptic Ulcer, June 1969 138
Secretin-like
Cholerosis Produced by a Diarrheogenic Non-beta Islet Cell Tumors of the
Pancreas, July 1969 139
Alterations in
Membrane Transport Produced by Diarrheogenic Non-beta Islet Cell Tumors of the
Pancreas, 1969 140
Recognition and
Management of the Diarrheal Syndrome Caused by Non-beta Islet Cell Tumors of the
Pancreas, February 1970 141
The GI Effects
on Pancreatic Tumors, March 5, 1970 142
Upper
Gastrointestinal Tract Hemorrhage, June 29, 1970 143
Non-beta Islet
Cell Tumors: Current Concepts, August 1970 144
Use of Urinary
Salt Concentrations in Surgical Fluid Therapy, September 1970 145
The Treatment of
Gastric Ulcer, October 1970 146
The Pancreas and
the First Hormones, October 1970 147
Relationship of
Biliary Phospholipid and Cholesterol Concentration to the Occurrence and
Dissolution of Human Gallstones, December 1970 148
Upper-Gastrointestinal
Tract Hemorrhage, 1971 149
Pancreatic
Problems, March 1971 150
Carcinoma of the
Rectum and the Rectosigmoid, April 1971 151
The Ohio State
University Pilot Medical School, July 1971 152
Surgical
Treatment of Multi-glandular syndromes, 1971 153
Ulcers of the
Stomach, December 1971 154
Surgery of the
Spleen, 1972 155
Operative
Cholangiography During Routine Cholecystectomy, April 1972 156
Double Lumen
Gastrojejunostomy Tube for Simplified Postoperative Management, July 1972 157
Studies on the
Potential Role of Secretin in the Islet Cell Tumor Diarrheogenic Syndrome,
September 1972 158
A Loser Today, A
Winner Tomorrow, December 1972 159
Prognostic
Implications of Calcium Mediated Gastrin Levels in the Ulcerogenic Syndrome,
January 1973 160
Duodenal Ulcer:
Medical and Surgical Management, 1973 161
Clinical
Evaluation of Hormonal Excess and Deficiency, 1973 162
Islet of
Longerhans, 1973 163
Reflexions Sur
La Chirurgie Gastro-Intestinale, October 8, 1973 164
Tumeurs
Endocrines Multiples, January 1974 165
A Surgeons Notes
on Preoperative Evaluation by the Family Physician, March 1974 166
Polyps of the
Colon, March 1974 167
Ulcerogenic and
Diarrheogenic Endocrine Tumors 168
Pancreatic
Tumors and the First Hormones, 1974 169
Surgical
Management of the Ulcerogenic Syndrome, June 1974 170
Surgical
Treatment of Gastrinoma and WDHA Syndrome, September 1974 171
Islet Cell
Tumors of the Pancreas and the Alimentary Tract, February 1975 172
The Technique of
Splenectomy, 1975 173
Diarrheogenic
Tumors of the Pancreas, May 1975 174
Syndromes
Associated with Islet Cell Tumors, 1975 175
Islet Cell
Tumors and the Alimentary Tract, May 1976 176
Observations on
the Postoperative Tumor Growth Behavior of Certain Islet Cell Tumors, October
1976 177
My First
Article, August 1977 178
Bert, March 1978 179
Preoperative
Evaluation of Patients with Duodenal Ulcer, April 1978 180
Bypass
Enteroenterostomy for Advanced Regional Ileitis, 1978 181
Gastrointestinal
Surgery for Intractable Ulcer, October 1978 182
Next Slide
Please, A Good One!, September 1979 183
Reflections on
Gastric Surgery, January 1980 184
Primary Peptic
Ulcerations of the Jejunum Associated with Islet Cell Tumors, September 1980 185
Surgery of the
Spleen, 1980 186
The
Zollinger-Ellison Syndrome, September 1981 187
The Community
Surgeon, Winter 1981 188
Surgery of the
Spleen, 1981 189
The Belch versus
the Balance of Trade, February 1982 190
Cancer of the
Pancreas: The Surgeon’s Dilemma, March 1982 191
In Memoriam: J.
Englebert Dunphy, M.D., 1908-1981, March 1982 192
Holding Fees in
Line, April 1982 193
The Legacies of
William Beaumont, Pioneer Investigator, 1983 194
Reflections of a
Former Chairman and Professor Emeritus of a Department of Surgery, March 1983 195
Overview
Biography, Doctor Loyal Davis, August 1983 196
Thirty Years
Experience with Gastrinoma, 1984 197
Treatment of
Gastrinoma, July-August 1984 198
Gastrinoma:
Factors Influencing Prognosis 199
Panel II 200
Technical Tricks
in Upper Abdominal Surgery 201
The
Zollinger-Ellison Syndrome, 1984 202
Current Concepts
in the Management of Gastrinoma, April-June 1987 203
Gastrinoma: The
Zollinger-Ellison Syndrome, September 1987 204
A Founder
Recalls the Birth of the Society of University Surgeons, February 1989 205
L’histoire du
Syndrome de Zollinger-Ellison, October 1990 206
A Salute to the
American Journal of Surgery on It’s 100th Birthday, December 1990 Collected Reprints of Robert M. Zollinger, M.D.
1929-1943 Collected Reprints of Robert M. Zollinger, M.D.
1953-1954 Collected Reprints of Robert M. Zollinger, M.D.
1953-1954 c.2
Collected Reprints of Robert M. Zollinger, M.D. 1960-1969 Folder 1
Atlas of
Surgical Operations, 3rd ed., photograph 2
Atlas of
Surgical Operations, 3rd ed., Legal/Financial correspondence,
1953-1961 3
Atlas of
Surgical Operations, 3rd ed., Vol. 2 correspondence 4
Atlas of
Surgical Operations, 3rd ed., Vol. 2 preface 5
Atlas of
Surgical Operations, 3rd ed., Vol. 2 reviews 6
Atlas of
Surgical Operations, 4th ed., correspondence 7
Atlas of Surgical Operations, 4th ed., Harry Cloudman
correspondence 8
Atlas of
Surgical Operations, 4th ed., Pat Larson correspondence 9
Atlas of
Surgical Operations, 4th ed., Robert M. Zollinger, Jr. correspondence 10
Atlas of
Surgical Operations, 4th ed., Joan Zulch correspondence 11
Atlas of
Surgical Operations, 4th ed., contract 12
Atlas of
Surgical Operations, 4th ed., research 13
Atlas of
Surgical Operations, royalty statement, 1975 14
Atlas of
Surgical Operations, 4th ed., Book Reviews, 1975 15
Atlas of
Surgical Operations, 5th ed., correspondence 16
Atlas of
Surgical Operations, 5th ed., Carol Donner correspondence 17
Atlas of
Surgical Operations, 5th ed., Robert M. Zollinger Jr. correspondence 18
Atlas of
Surgical Operations, 5th ed., Joan Zulch correspondence 19
Atlas of
Surgical Operations, 5th ed., contract 20
Atlas of
Surgical Operations, 5th ed., office copy, 1980 21
Atlas of
Surgical Operations, 5th ed., Aorto Femoral Bypass Graft 22
Atlas of
Surgical Operations, 5th ed., plate description 23
Atlas of
Surgical Operations, 5th ed., illustration revisions, 1980 24
Atlas of
Surgical Operations, 5th ed., illustration research 25
Atlas of
Surgical Operations, 5th ed., research 26
Atlas of
Surgical Operations, 5th ed., corrections, 1983 27
Atlas of
Surgical Operations, 5th ed. Advertisement 28
Atlas of
Surgical Operations, 6th ed., General correspondence 29
Atlas of
Surgical Operations, 6th ed., Carol Donner correspondence 30
Atlas of
Surgical Operations, 6th ed., Instruments correspondence 31
Atlas of
Surgical Operations, 6th ed., Robert M. Zollinger Jr. correspondence 32
Atlas of
Surgical Operations, 6th ed., Joan Zulch correspondence 33
Atlas of
Surgical Operations, 6th ed., Contract 34
Atlas of
Surgical Operations, 6th ed., Table of Contents 35
Atlas of
Surgical Operations, 6th ed., Diskette contents 36
Atlas of
Surgical Operations, 6th ed., Parathyroid, 1986 37
Atlas of
Surgical Operations, 6th ed., Chapter Revisions,1986 38
Atlas of
Surgical Operations, 6th ed., Final Priority List for Plates, 1986 39
Atlas of
Surgical Operations, 6th ed., Notes for Revision of Illustrated
Plates 40
Atlas of
Surgical Operations, 6th ed., Plate Sketches by J. Smith 41
Atlas of
Surgical Operations, 6th ed., Anesthesia 42
Atlas of
Surgical Operations, 6th ed., Anterior Gastroenterostomy 43
Atlas of
Surgical Operations, 6th ed., Billroth I Gastric Resection with
Stapler 44
Atlas of
Surgical Operations, 6th ed., Billroth II Gastric Resection with
Stapler 45
Atlas of
Surgical Operations, 6th ed., Colon Anastomosis Stapled 46
Atlas of
Surgical Operations, 6th ed., Entero-Enterostomy Stapled 47
Atlas of
Surgical Operations, 6th ed., Gastrostomy with Stapler 48
Atlas of
Surgical Operations, 6th ed., Kock Pouch Correspondence 49
Atlas of
Surgical Operations, 6th ed., Modified Radical Mastectomy with
Axillary Dissection 50
Atlas of
Surgical Operations, 6th ed., Parathyroidectomy 51
Atlas of
Surgical Operations, 6th ed., Preoperative Preparation and
Postoperative Care 52
Atlas of
Surgical Operations, 6th ed., Proctocolectomy with Ileal Reservoir 53
Atlas of
Surgical Operations, 6th ed., Proctocolectomy, Sphincter Preserving
Ileoanal Anastomosis 54
Atlas of
Surgical Operations 6th ed., Pyloroplasty 55
Atlas of
Surgical Operations, 6th ed., Repair of Abdominal Wall Defects 56
Atlas of
Surgical Operations, 6th ed., Saphenous Vein “In Situ”
Infrainguinal Arterial Bypass 57
Atlas of
Surgical Operations, 6th ed., Shouldice Repair 58
Atlas of
Surgical Operations, 6th ed., Small Intestine Anastomosis 59
Atlas of
Surgical Operations, 6th ed., Surgical Techni