Results 81 to 90 of about 73,606 (214)

Structure functions and parton distributions [PDF]

, 2002
In this talk, I review the status of theoretical understanding of nuclear structure functions and parton distributions and discuss the constraints on nuclear parton distributions from existing data and the global QCD analysis.Comment: Latex, 10 pages, to
Altarelli, Ashman, Collins, Collins, Curci, Dokshitzer, Eskola, Eskola, Eskola, Eskola, Gribov, Gribov, Guo, Hirai, Jianwei Qiu, Martin, Martin, Mueller, Mueller, Pumplin, Qiu, Qiu, Qiu   +22 more
core   +3 more sources

A Preliminary Comparison of SOC Storage Between the Traditional Farmland and Well‐Facilitated Farmland Management

Earth's Future, Volume 14, Issue 4, April 2026.
Abstract Soil organic carbon (SOC) is central to the global carbon cycle, yet unsustainable cultivation has resulted in a continuing SOC loss and has made it highly vulnerable to future climate change. In China, the Well‐Facilitated Farmland Construction (WFC) initiative has sought to enhance soil conditions by integrating farmland management units ...
Zheng Wang, Ruiying Zhao, Jie Xue, Rui Lu, Zhongxing Chen, Qiangyi Yu, Wei Chen, Qichun Zhang, Zhou Shi, Songchao Chen   +9 more
wiley   +1 more source

Parton Distributions

, 2009
We provide an assessment of the state of the art in various issues related to experimental measurements, phenomenological methods and theoretical results relevant for the determination of parton distribution functions (PDFs) and their uncertainties, with the specific aim of providing benchmarks of different existing approaches and results in view of ...
Dittmar, M., Forte, S., Glazov, A., Moch, S., Altarelli, G., Anderson, J., Ball, R. D., Beuf, G., Boonekamp, M., Burkhardt, H., Caola, F., Ciafaloni, M., Colferai, D., Cooper-Sarkar, A., de Roeck, A., Del Debbio, L., Feltesse, J., Gelis, F., Grebenyuk, J., Guffanti, A., Halyo, V., Latorre, J. I., Lendermann, V., Li, Gang, Motyka, L., Petersen, T., Piccione, A., Radescu, V., Rogal, M., Rojo, J., Royon, C., Salam, G. P., Salek, D., Stasto, A. M., Thorne, R. S., Ubiali, M., Vermaseren, J. A. M., Vogt, A., Watt, G., White, C. D.   +39 more
openaire   +4 more sources

Do Lagged Ecosystem Feedbacks to Hydroclimate Extremes Promote Resilience of Forest Watersheds?

Water Resources Research, Volume 62, Issue 4, April 2026.
Abstract Hydroclimate extremes (e.g., droughts and wet periods) can significantly alter forest ecohydrological processes. Severe growing‐season droughts can reduce leaf area index (LAI), tree conductivity, and growing‐season length through early senescence. These strategies reduce transpiration (green water use), conserve subsurface water storage while
Ruoyu Zhang, Lawrence E. Band, Taehee Hwang   +2 more
wiley   +1 more source

Intrinsic bottom and its impact on heavy new physics at the LHC

EPJ Web of Conferences, 2016
Heavy quark parton distribution functions (PDFs) play an important role in several Standard Model and New Physics processes. Most analyses rely on the assumption that the charm and bottom PDFs are generated perturbatively by gluon splitting and do not ...
Lyonnet Florian
doaj   +1 more source

Parton Distributions Working Group [PDF]

, 2000
The main focus of this working group was to investigate the different issues associated with the development of quantitative tools to estimate parton distribution functions uncertainties.
Berger, E. L., Brock, R., Casey, D., de Barbaro, L., Demina, R., Giele, W. T., Hirosky, R., Huston, J., Kalk, J., Keller, S. A., Klasen, M., Kosower, D. A., Kramer, M., Kretzer, S., Kuhlmann, S., Martin, R., Olness, F. I., Plehn, T., Pumplin, J., Scalise, R. J., Schellman, H., Smith, J., Soper, D. E., Sterman, G., Stump, D., Tung, W. -K., Varelas, N., Vogelsang, W., Yang, U. K.   +28 more
core   +1 more source

Quark Imaging in the Proton Via Quantum Phase-Space Distributions

, 2003
We develop the concept of quantum phase-space (Wigner) distributions for quarks and gluons in the proton. To appreciate their physical content, we analyze the contraints from special relativity on the interpretation of elastic form factors, and examine ...
A. Chodos, A. Chodos, A. Freund, A.L. Licht, A.V. Belitsky, A.V. Belitsky, A.V. Belitsky, A.V. Belitsky, A.V. Belitsky, A.V. Efremov, A.V. Radyushkin, A.V. Radyushkin, A.W. Schreiber, D. Boer, D. Müller, D. Sivers, D. Yennie, D.E. Soper, D.T. Smithey, E.J. Ernst, E.P. Wigner, Feng Yuan, G. Breitenbach, G. Holzwarth, H.-W. Lee, H.J. Groenewold, J. Kelly, J.C. Collins, J.C. Collins, J.G. Kirkwood, J.M.F. Labastida, J.P. Ralston, K. Banaszek, K. Goeke, K. Husimi, K. Vogel, L. Cohen, M. Betz, M. Burkardt, M. Burkardt, M. Burkardt, M. Diehl, M. Gluck, M. Göckeler, M. Hillery, M.V. Polyakov, N. Balasz, N. Mathur, P. Hägler, P. Schweitzer, P.V. Pobylitsa, R.G. Sachs, R.L. Jaffe, S. Boffi, S. Brodsky, S. Scopetta, S.D. Bass, S.J. Brodsky, S.J. Brodsky, V. Gadiyak, V.Y. Petrov, X. Ji, X. Ji, X. Ji, X. Ji, X. Ji, X. Ji, X. Ji, X. Ji, X. Ji, X. Song, Xiangdong Ji   +71 more
core   +1 more source

On positivity of parton distributions [PDF]

, 1998
We discuss the bounds on polarized parton distributions which follow from their definition in terms of cross section asymmetries. We spell out how the bounds obtained in the naive parton model can be derived within perturbative QCD at leading order when ...
Altarelli, Guido, Forte, Stefano, Ridolfi, Giovanni   +2 more
core   +2 more sources

Pravastatin Corrects Endothelial Dysfunction in Ex Vivo Uterine Radial Arteries in Preeclampsia

Acta Physiologica, Volume 242, Issue 4, April 2026.
ABSTRACT Aim Endothelium‐dependent relaxation in isolated uterine radial arteries from normotensive (NT) and preeclamptic (PE) pregnancies, and the acute effects of pravastatin in the latter vessels were assessed. Pravastatin is hypothesized to alleviate endothelial dysfunction in PE via modulating aspects of NO and endothelium‐derived ...
Nathan M. Luque, Leo Leader, Sandra M. Lowe, Steven D. Horrowitz, Marianne Tare, Victoria Hinkley, Vladimir V. Matchkov, Maged M. Costantine, Irit Markus, Lu Liu, Shaun L. Sandow, Timothy V. Murphy   +11 more
wiley   +1 more source

Pionic parton distributions revisited [PDF]

The European Physical Journal C, 1999
14 pages incl.
Gluck, M., Reya, E., Schienbein, I.
openaire   +3 more sources