Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation

Search Page

Filters

My Custom Filters

Results by year

Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1876 1
1900 1
1904 1
1906 1
1908 1
1910 1
1911 1
1913 2
1914 1
1917 2
1926 1
1927 1
1930 2
1932 1
1933 1
1934 1
1937 2
1944 3
1945 9
1946 12
1947 20
1948 49
1949 22
1950 53
1951 57
1952 70
1953 71
1954 78
1955 65
1956 57
1957 87
1958 66
1959 68
1960 54
1961 51
1962 50
1963 70
1964 92
1965 94
1966 99
1967 83
1968 99
1969 129
1970 123
1971 133
1972 131
1973 149
1974 147
1975 148
1976 151
1977 136
1978 173
1979 197
1980 167
1981 170
1982 201
1983 241
1984 247
1985 234
1986 266
1987 350
1988 455
1989 499
1990 528
1991 522
1992 547
1993 575
1994 481
1995 592
1996 617
1997 580
1998 577
1999 637
2000 651
2001 731
2002 709
2003 691
2004 695
2005 860
2006 972
2007 990
2008 1098
2009 1172
2010 1333
2011 1503
2012 1613
2013 1706
2014 1874
2015 2057
2016 2170
2017 2288
2018 2291
2019 2416
2020 2915
2021 3429
2022 3402
2023 3351
2024 3440
2025 190

Publication date

Text availability

Article attribute

Article type

Additional filters

Article Language

Species

Sex

Age

Other

Search Results

51,182 results

Results by year

Filters applied: . Clear all
Page 1
Woodward-Hoffmann or Hoffmann-Woodward? Cycloadditions and the Transformation of Roald Hoffmann from a "Calculator" to an "Explainer".
Seeman JI. Seeman JI. Chem Rec. 2024 Aug;24(8):e202300181. doi: 10.1002/tcr.202300181. Chem Rec. 2024. PMID: 39188247 Review.
Herein is presented a historical analysis of Woodward and Hoffmann's determination of the mechanism of cycloadditions. This analysis is based on thorough analyses with Roald Hoffmann of his 1964 and 1965 laboratory notebooks and his archived documents and on …
Herein is presented a historical analysis of Woodward and Hoffmann's determination of the mechanism of cycloadditions. This an …
Hoffmann's Sign with Clonus.
Friedman JH. Friedman JH. R I Med J (2013). 2023 Mar 1;106(2):21. R I Med J (2013). 2023. PMID: 36848537 Free article. No abstract available.
Going Beyond Woodward and Hoffmann's Electrocyclizations and Cycloadditions: Sigmatropic Rearrangements.
Seeman JI. Seeman JI. Chem Rec. 2024 Dec;24(12):e202400050. doi: 10.1002/tcr.202400050. Epub 2024 Nov 13. Chem Rec. 2024. PMID: 39535477 Free PMC article. Review.
This publication reveals the research trajectory taken by Hoffmann from which this portion of the no-mechanism problem was solved. Hoffmann used five different quantum chemical tools, all based on either extended Huckel theoretical calculations or frontier molecular …
This publication reveals the research trajectory taken by Hoffmann from which this portion of the no-mechanism problem was solved. …
Hoffmann's syndrome in subclinical hypothyroidism.
Hs K, Cheemalapati S, Cr V. Hs K, et al. J R Coll Physicians Edinb. 2024 Mar;54(1):26-28. doi: 10.1177/14782715231218033. Epub 2023 Dec 11. J R Coll Physicians Edinb. 2024. PMID: 38078406
Hypothyroidism is an endocrine disorder which occurs due to a deficiency of thyroid hormones. Hoffmann's syndrome is a rare complication of hypothyroidism - presenting as hypothyroid myopathy. ...
Hypothyroidism is an endocrine disorder which occurs due to a deficiency of thyroid hormones. Hoffmann's syndrome is a rare co …
Hoffmann's sign in cervical spondylotic myelopathy patients: pathological insights from neuroimaging.
Chang J, Zhu K, Wang Y, Zhang S, Li Y, Zuo J, Xie B, Ni H, Yao J, Xu Z, Bian S, Yan T, Wu X, Chen S, Xu P, Song P, Wu Y, Shen C, Zhu J, Yu Y, Dong F. Chang J, et al. Neurosurg Focus. 2024 Jun;56(6):E10. doi: 10.3171/2024.3.FOCUS23837. Neurosurg Focus. 2024. PMID: 38823056
OBJECTIVE: Hoffmann's sign testing is a commonly used physical examination in clinical practice for patients with cervical spondylotic myelopathy (CSM). ...METHODS: Seventy-six patients with CSM and 40 sex- and age-matched healthy controls (HCs) underwent multimodal …
OBJECTIVE: Hoffmann's sign testing is a commonly used physical examination in clinical practice for patients with cervical spo …
Hoffmann's sign.
Weir RA, Chew C. Weir RA, et al. Postgrad Med J. 2019 Nov;95(1129):626. doi: 10.1136/postgradmedj-2019-136471. Epub 2019 Jul 20. Postgrad Med J. 2019. PMID: 31326943 No abstract available.
Hoffmann's syndrome in the differential work-up of myopathic complaints: a case report.
Winter S, Heiling B, Eckardt N, Kloos C, Axer H. Winter S, et al. J Med Case Rep. 2023 Oct 31;17(1):473. doi: 10.1186/s13256-023-04184-6. J Med Case Rep. 2023. PMID: 37907975 Free PMC article.
BACKGROUND: Hoffmann's syndrome is a rare form of hypothyroid myopathy in adults, which is mainly characterized by muscular weakness and muscular pseudohypertrophy. ...CONCLUSIONS: Here, we focus on diagnostic routines and typical findings to differentiate Hoffma …
BACKGROUND: Hoffmann's syndrome is a rare form of hypothyroid myopathy in adults, which is mainly characterized by muscular we …
Hoffmann's syndrome necessitating forearm fasciotomy: a case report.
Aarsæther E, Joakimsen R, Halvorsen H, Sildnes T, Sivertsen O, Due J. Aarsæther E, et al. J Med Case Rep. 2020 Mar 2;14(1):38. doi: 10.1186/s13256-020-2351-x. J Med Case Rep. 2020. PMID: 32122401 Free PMC article.
BACKGROUND: Hoffmann's syndrome is a rare form of hypothyroid myopathy. Only a few cases of fasciotomy in this setting have previously been reported. ...By the time his hypothyroid status was confirmed, conservative treatment and orally administered levothyroxine gr …
BACKGROUND: Hoffmann's syndrome is a rare form of hypothyroid myopathy. Only a few cases of fasciotomy in this setting have pr …
Kenichi Fukui, Frontier Molecular Orbital Theory, and the Woodward-Hoffmann Rules. Part II. A Sleeping Beauty in Chemistry().
Seeman JI. Seeman JI. Chem Rec. 2022 Apr;22(4):e202100300. doi: 10.1002/tcr.202100300. Epub 2022 Apr 1. Chem Rec. 2022. PMID: 35363432 Review.
Thus, Fukui's paper was a precursor to Woodward and Hoffmann's 1965 papers that proposed orbital symmetry control of what would later be termed "pericyclic reactions." ...
Thus, Fukui's paper was a precursor to Woodward and Hoffmann's 1965 papers that proposed orbital symmetry control of what woul …
Hermann Hoffmann's 1921 Monograph: "The Offspring of Endogenous Psychoses: Genealogical-Characterological Examinations".
Kendler KS, Klee A. Kendler KS, et al. Schizophr Bull. 2022 Oct 19;48(Suppl 1):S20-S27. doi: 10.1093/schbul/sbac108. Schizophr Bull. 2022. PMID: 36260544 Free PMC article.
Field work was limited to 3 months. Hoffmann ascertained families with at least one parent with certain DP, after Kraepelin, with children the youngest of whom were at least 30 years old. ...Hoffmann explored a wide range of two and three locus recessive models in h …
Field work was limited to 3 months. Hoffmann ascertained families with at least one parent with certain DP, after Kraepelin, with chi …
51,182 results
You have reached the last available page of results. Please see the User Guide for more information.