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Articles 271 - 300 of 1971
Full-Text Articles in Life Sciences
Masthead And Table Of Contents Nebraska Bird Review 64(3) September 1996
Masthead And Table Of Contents Nebraska Bird Review 64(3) September 1996
Nebraska Bird Review
Table of Contents
A Review of the Status of Limnodromus griseus, the Short-billed Dowitcher, in Nebraska ……………..74
A Late Baird’s Sandpiper in Keith County ……………..79
Another Common Crane in Nebraska with a Summary of North American Records…………….. 80
Nebraska Ornithologists’ Union Annual Meeting 18 May 1996…………….. 82
NOU and NAMC Spring Bird Counts May 1996…………….. 83
Table of Bird Species Observed during NOU Annual Meeting 17-19 May 1996, and NAMC 11 May 1996 in Two Counties…………….. 84
Summer Field Report June-July 1996 ……………..90
Observers for Summer Field Report ……………..103
Nebline, September 1996
NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County
Horticulture
Rural $ense
Family Living
4-H & Youth
Environmental Focus
Community & Leadership Development
Extension Calendar
Expanded Food and Nutrition Education Program (EFNEP)
Nebraska Association for Family and Community Education News
and other extension news and events
Activation Of The Human Thymidine Kinase (Tk) Promoter By Simian Virus 40 Large T Antigen Requires Both The T Antigen Prb Family-Binding Domain And Tk Promoter Sequences Resembling E2f-Binding Sites., Michelle M. Anderson, Jun Chen, Charles N. Cole, Susan E. Conrad
Activation Of The Human Thymidine Kinase (Tk) Promoter By Simian Virus 40 Large T Antigen Requires Both The T Antigen Prb Family-Binding Domain And Tk Promoter Sequences Resembling E2f-Binding Sites., Michelle M. Anderson, Jun Chen, Charles N. Cole, Susan E. Conrad
Dartmouth Scholarship
Infection of quiescent cells with the DNA tumor virus simian virus 40 induces expression of the cellular thymidine kinase (TK) gene a minimum of 10- to 20-fold, and this induction depends upon the viral protein large T antigen (T-Ag). To define both human TK promoter elements and T-Ag functional domains required for transcriptional induction, we have established a system in which stable Rat-1 transfectants harboring TK promoter-luciferase hybrid genes are infected with recombinant adenoviruses expressing either wild-type or mutant forms of T-Ag and luciferase expression is measured as an indicator of promoter activity. The results show that (i) a 135-bp …
The Prairie Naturalist Volume 28, No. 3. September 1996
The Prairie Naturalist Volume 28, No. 3. September 1996
The Prairie Naturalist
REPRODUCTIVE SUCCESS OF GRASSHOPPER SPARROWS IN RELATION TO EDGE ▪ J. M Delisle, and J. A. Savidge
OBSERVATIONS ON BATS AT BADLANDS NATIONAL PARK, SOUTH DAKOTA ▪ M A. Bogan, J. G. Osborne, and J. A. Clarke
DIETS OF FEMALE WHITE-TAILED DEER IN THE CROSS-TIMBERS REGION ▪ F. C. Bryant, G. Van Vreede, T. J. Deliberto, and K. L. Gee
NOTES
Second Record of White Ibis in North Dakota ▪ J. W. Marlow, L. D. Igl, and M. R. Hartman
A Recent Record of Mountain Lion in Nebraska ▪ H. H. Genoways and P. W. Freeman
Prairie Falcon Predation on …
Taking Root, W. John Hayden
Taking Root, W. John Hayden
Biology Faculty Publications
The brief description of mangrove reproduction in John N. Cole's "Off Key, Out of Reach" [A Sense of Place, July-August] contains an error.
Tupelo, Water Tupelo Nyssa Aquatica L., Gene Silberhorn
Tupelo, Water Tupelo Nyssa Aquatica L., Gene Silberhorn
Reports
The Wetland Flora Technical Report series provides concise information regarding the identification, growth habits, distribution, habitat, ecology and wetland indicator status for the title species. Illustrations are also included to aid in specimen ident
A Recent Record Of Mountain Lion In Nebraska, Hugh H. Genoways, Patricia W. Freeman
A Recent Record Of Mountain Lion In Nebraska, Hugh H. Genoways, Patricia W. Freeman
University of Nebraska State Museum: Mammalogy Papers
On the morning of November 10, 1991, a deer hunter in the Pine Ridge area of extreme northwestern Nebraska shot a young female mountain lion (Gertzen, 1991, Omaha World-Herald, November 15, Sunrise ed. p. 17sf; Henion, 1991, Omaha World-Herald, November 15, Metro ed. p. 17). Although mountain lions (Felis concolor) were part of the original mammalian fauna of Nebraska (Jones, 1949, J. Mammal. 30: 313; 1962, Bull Univ. Nebraska State Mus. 4: 87-100; 1964, Univ. Kansas Publ., Mus. Nat. Hist. 16: 1-356), the species has been considered to be extirpated from the state. The most recent record that …
Time Of Lambing: Extension Manual, Keith Croker, Ian Mcfarland
Time Of Lambing: Extension Manual, Keith Croker, Ian Mcfarland
Agriculture reports
No abstract provided.
Estimation Of Relative Abundance Of Recreationally Important Finfish In The Virginia Portion Of The Chesapeake Bay : Annual Progress Report July 1995 - June 1996, Patrick J. Geer, Herbert M. Austin
Estimation Of Relative Abundance Of Recreationally Important Finfish In The Virginia Portion Of The Chesapeake Bay : Annual Progress Report July 1995 - June 1996, Patrick J. Geer, Herbert M. Austin
Reports
Measures of juvenile abundance are presently in wide use as a key element in the management of the Atlantic States' coastal fishery resources. Estimates of the relative interannual abundance of early juveniles (age-0) generated from scientific survey programs have been found to provide a reliable and early estimator of future year class strength (Goodyear 1985, Lipcius and Van Engel 1990). After a review of previously available indices of juvenile abundance for important fishery resource species in the Chesapeake Bay, the Chesapeake Bay Stock Assessment Committee (CBSAC), a federal/state committee sponsored and funded by the National Oceanic and Atmospheric Administration (NOAA), …
The Epidermis Still In Control?, Winfried Peters, A. Tomos
The Epidermis Still In Control?, Winfried Peters, A. Tomos
Winfried S. Peters
Emergence And Overwintering Brood Of Douglas-Fir Beetle Seven Years After The Clover Mist Fire On The Clarks Fork Ranger District, Shoshone National Forest, Wyoming, Judith E. Pasek
Judith E Pasek
Emergence patterns and population levels of Douglas-fir beetles (DFB), Dendroctonus pseudotsugae Hopkins, in the seventh year of infestation following the Clover Mist Fire were evaluated on the Clarks Fork Ranger District of the Shoshone National Forest. Adult emergence in 1995 returned to a single peak beginning in mid-June, about a week later than normal likely due to cold, wet spring weather. Adults of both the '93-'94 and '94-'95 generations emerged, demonstrating for the second year in a row that DFB can extend its life cycle up to two years. Almost half of the total emergence of the '93-'94 generation was …
Improved Cultivation Systems For Isolation Of The Colorado Potato Beetle Spiroplasma., Meghnad Konai, K. J. Hackett, D. L. Williamson, J. J. Lipa, J. D. Pollack, G. E. Gasparich, E. A. Clark, D. C. Vacek, R. F. Whitcomb
Improved Cultivation Systems For Isolation Of The Colorado Potato Beetle Spiroplasma., Meghnad Konai, K. J. Hackett, D. L. Williamson, J. J. Lipa, J. D. Pollack, G. E. Gasparich, E. A. Clark, D. C. Vacek, R. F. Whitcomb
Gail Gasparich
Cropwatch No. 96-20, Aug. 30, 1996, Lisa Brown Jasa
Cropwatch No. 96-20, Aug. 30, 1996, Lisa Brown Jasa
Crop Watch
Inside
Sugar beet diseases ........... 136
Evapotranspiration data ... 136
Grasshopper control ......... 137
Hessian fly/pest controls .. 138
Wheat seed treatments ..... 139
Weather outlook ................ 140
Late season weeds ............ 140
Predicting last irrigation.. 141
Kansas pest update ........... 142
Regulation Of Ribulose Bisphosphate Carboxylase Gene Expression In Natural Phytoplankton Communities .1. Diel Rhythms, S. L. Pichard, L. Campbell, J. B. Kang, F. Robert Tabita, John H Paul
Regulation Of Ribulose Bisphosphate Carboxylase Gene Expression In Natural Phytoplankton Communities .1. Diel Rhythms, S. L. Pichard, L. Campbell, J. B. Kang, F. Robert Tabita, John H Paul
Marine Science Faculty Publications
Marine phytoplankton fix carbon dioxide primarily through the action of ribulose-1,5-bisphosphate carboxylase/oxygenase (RubisCO), the first enzyme in the Calvin Cycle. Although the regulation of this enzyme has been studied in algal cultures and higher plants, little is known regarding RubisCO regulation in natural phytoplankton populations. To determine if natural communities of phytoplankton utilize transcriptional regulation to control RubisCO expression, we investigated the diel relationship between 14C carbon fixation and RubisCO large subunit (rbcL) transcript levels, rbcL DNA, chlorophyll a, autofluorescent cell counts and bacterial direct counts for natural communities of the southeastern Gulf of Mexico. Studies …
Hydrogen Atom Extraction And Redeposition On Hydrogen-Terminated Silicon Surface With Scanning Tunneling Microscope At Room Temperature, D. H. Huang, Y. Yamamoto
Hydrogen Atom Extraction And Redeposition On Hydrogen-Terminated Silicon Surface With Scanning Tunneling Microscope At Room Temperature, D. H. Huang, Y. Yamamoto
Scanning Microscopy
We have previously demonstrated that hydrogen atoms on the hydrogen-terminated Si(100)-2xl:H surface can be extracted by applying either positive or negative voltage pulses between an STM tip and the sample surface with a certain tunneling current. This phenomenon suggests that electron excitation and field evaporation both play a role in atom transfer. Under our experimental conditions, hydrogen atoms are extracted in pairs from either a single dimer or from two adjacent dimers in neighboring rows. Hydrogen atoms can also be redeposited onto the Si(100)-2xl:H surface from a tungsten tip, which has picked up hydrogen from the sample surface through the …
The Role Of Calcium In The Regulation Of Apoptosis, David J. Mcconkey
The Role Of Calcium In The Regulation Of Apoptosis, David J. Mcconkey
Scanning Microscopy
The recognition that apoptosis is regulated by an evolutionarily conserved set of polypeptides from the nematode Caenorhabditis elegans to humans suggests that a conserved set of biochemical mechanism(s) may also be involved in the response. Early evidence suggested that the endogenous endonuclease implicated in apoptosis in most model systems is Ca2+ -dependent, and subsequent work from a number of independent laboratories suggests that alterations in cytosolic Ca2+ homeostasis are one of the conserved biochemical pathways regulating the response. Molecular targets for Ca2+ are now being identified and include signal transduction intermediates, endonuclease(s) and proteases, and the enzymes involved in the …
Influence Of Bleeding On Post-Mortem Tenderization Of Fish Muscle During Chilled Storage, M. Ando, A. Nishiyabu, T. Nakagawa, Y. Makinodan
Influence Of Bleeding On Post-Mortem Tenderization Of Fish Muscle During Chilled Storage, M. Ando, A. Nishiyabu, T. Nakagawa, Y. Makinodan
Scanning Microscopy
The influence of bleeding on post-mortem tenderization of fish muscle during storage was studied. Six fish species were used for the present study. Among them, delay of post-mortem tenderization of muscle by bleeding was shown in the pelagic fishes: yellowtail, horse mackerel, and striped jack. On the other hand, bleeding had no influence on the muscle firmness of the bottom fishes: red sea bream, flatfish, and rudder-fish. According to transmission electron microscopy, degradation of pericellular collagen fibrils was delayed in bled yellowtail and horse mackerel. In the case of striped jack, though, collagen fibril degradation could not be observed; slower …
Applications Of Laser Microprobe Mass Spectrometry In Biology And Medicine, Annette Bakker, Luc Van Vaeck, Wim Jacob
Applications Of Laser Microprobe Mass Spectrometry In Biology And Medicine, Annette Bakker, Luc Van Vaeck, Wim Jacob
Scanning Microscopy
Laser microprobe mass spectrometry (LMMS) provides spot analysis with a lateral resolution of 1-5 μm. Focused laser ionisation, combined with mass spectrometry, yields information on elements, molecular identification of inorganic substances, and structural characterisation of organic molecules of typically less than 2-3 kDa. Quantification in complex heterogeneous systems, such as biological materials, is not possible at the present state of the art. The strength of the method lies in the qualitative information on the molecular composition of the analyte, not just element detection, with a lateral resolution at the light microscopy level. The applications of this technique in the field …
Verbena Hastata L., Bob Edgin
Contact Force Dependence On Relative Humidity: Investigations Using Atomic Force Microscopy, E. Finot, E. Lesniewska, J. -C. Mutin, S. I. Hosain, J. -P. Goudonnet
Contact Force Dependence On Relative Humidity: Investigations Using Atomic Force Microscopy, E. Finot, E. Lesniewska, J. -C. Mutin, S. I. Hosain, J. -P. Goudonnet
Scanning Microscopy
This paper deals with the ability of scanning force microscopy to determine contact forces of various materials. Indeed, with high spring constants at low relative humidity, the nature of the material can be determined by measurement of the contact force as the tip approaches. Cantilevers with a high spring constant are used to achieve solid-solid contact for the tip-sample system. The capillary force estimation provides information on the development of the height of the water meniscus formed between the tip and different surfaces depending on the relative humidity. Finally, we focus our attention on measurements of moduli of elasticity which …
12th Biennial Cheese Industry Conference, Various Authors
12th Biennial Cheese Industry Conference, Various Authors
Cheese Industry Conference
No abstract provided.
Cropwatch No. 96-19, Aug. 16, 1996, Lisa Brown Jasa
Cropwatch No. 96-19, Aug. 16, 1996, Lisa Brown Jasa
Crop Watch
Inside
ECB update.................132
Evapotranspiration data.................132
Millet for feed.................133
Winter wheat meetings.................133
Herbicide Guide.................133
Restricted entry intervals.................134
Nitrogen use.................134
Covalent Labeling Of Proteins With Fluorescent Compounds For Imaging Applications, Darl R. Swartz
Covalent Labeling Of Proteins With Fluorescent Compounds For Imaging Applications, Darl R. Swartz
Scanning Microscopy
The labeling of proteins with fluorescent compounds for microscopy has allowed a greater understanding of biological processes. The preparation of fluorescent proteins is the first step in development of their use in microscopy. Methods are described to label and characterize a protein as an example of the general approach for other proteins. Skeletal muscle alpha-actinin was labeled with either fluorescein-5-maleimide or 5-iodoaceamidofluorescein and the reaction characterized. The maleimide reaction was much more rapid and efficient than the iodoacetamide reaction giving a coupling efficiency of 65% under the given ration conditions. The fluorescein-5-maleimide alpha-actinin was functionally characterized and there was essentially …
Pelage Coloration In Oldfield Mice (Peromyscus Polionotus): Antipredator Adaptation?, Mark C. Belk, Michael H. Smith
Pelage Coloration In Oldfield Mice (Peromyscus Polionotus): Antipredator Adaptation?, Mark C. Belk, Michael H. Smith
Faculty Publications
Reflectance spectra (in full light and moonlight) of dorsal pelage of 469 adult oldfield mice (Peromyscus polionotus) comprising nine regional samples were compared to reflectance spectra of corresponding surface and subsurface soil samples to test for a selective effect of predation on color of pelage. Mice were slightly more reddish in hue, generally had more chroma, and were less reflective than soil at all locations. Color of pelage within locations was not significantly correlated with color of soil. Among all locations, brightness of pelage and soil were significantly positively correlated. Among mainland locations, there was a significant positive …
Labeling With Nanogold And Undecagold: Techniques And Results, James F. Hainfeld
Labeling With Nanogold And Undecagold: Techniques And Results, James F. Hainfeld
Scanning Microscopy
A significant new development in gold labeling for microscopy has been achieved through the use of gold cluster compounds that are covalently attached to antibodies or other probe molecules. These unique gold probes are smaller than most colloidal gold conjugates and exhibit improved penetration into tissues, higher labeling densities, and allow many new probes to be made with peptides, nucleic acids, lipids, drugs, and other molecules. A new fluorescent-gold conjugate is useful for examining localization by fluorescence microscopy, then visualizing the same label at the ultrastructural level in the electron microscope.
Quantitative Analyses Of Microwear And Honing On The Sloping Crest Of The P3 In Female Japanese Monkeys (Macaca Fuscata), Teruyuki Hojo
Quantitative Analyses Of Microwear And Honing On The Sloping Crest Of The P3 In Female Japanese Monkeys (Macaca Fuscata), Teruyuki Hojo
Scanning Microscopy
Female wild Japanese monkeys (Macaca fuscata), as with all male cercopithecoids, use the mesiobuccal surfaces or the elongated crests of the mandibular third premolars (P3s), as cutting blocks that wear against edges of maxillary canines during threat manifestation or food-eating. In other words, the crests of their P3s are honed with the maxillary canines. The crests become sloped during growth and more heavily striated with the advance of age. The number, directions, lengths, and widths of these striations have been analyzed quantitatively using scanning electron microscopy (SEM). Two samples showed two distinct types of parallel striations, one longer and thicker …
Managing Multiple Information Sources Through Ontologies: Relationship Between Vocabulary Heterogeneity And Loss Of Information, Eduardo Mena, Vipul Kashyap, Arantza Illarramendi, Amit P. Sheth
Managing Multiple Information Sources Through Ontologies: Relationship Between Vocabulary Heterogeneity And Loss Of Information, Eduardo Mena, Vipul Kashyap, Arantza Illarramendi, Amit P. Sheth
Kno.e.sis Publications
The ability to deal with a huge number of independent and heterogeneous repositories is the most critical problem in Global Information Systems. One approach to enable efficient query processing is by utilizing semantic descriptions (organized as ontologies) of such repositories whenever available.
In this context semantic relationships among ontologies can be used Query Processors. Three kind of relationships are considered: synonyms and hypernyms. Using synonyms the semantic of the query is preserved; however, when synonyms are not available and hypernyms or hyponyms are used there exists some loss of information that must be measured.
Meeting Minutes, August 13th, 1996, National Smokejumper Association Executive Committee
Meeting Minutes, August 13th, 1996, National Smokejumper Association Executive Committee
National Smokejumper Association Meeting Minutes
Agenda: Minutes ; Financial report; Membership report; Committee Report:; Hall of Fame; National Forest Service Museum Alliance; Computer on Line; Smokejumper Video; Recognition Award Certificates; Newsletter; Other:; NSA financial support for the installation of heater; Meeting adjourned; next meeting;
The Neonatal Chinchilla Cochlea: Morphological And Functional Study, R. V. Harrison, J. R. Cullen, S. Takeno, R. J. Mount
The Neonatal Chinchilla Cochlea: Morphological And Functional Study, R. V. Harrison, J. R. Cullen, S. Takeno, R. J. Mount
Scanning Microscopy
The developmental time scale of the cochlea varies from species to species. We investigate here the condition of the neonatal cochlea in the chinchilla, a species increasingly used in auditory research. We have examined the morphology of cochlear hair cells using scanning microscopy, and the development of auditory function during the first postnatal month by monitoring auditory brainstem evoked responses (ABR). We find that although there were some outer hair cell kinocilia present in middle and apical areas, the hair cells otherwise were mature at 24 hours after birth. Furthermore, cochlear auditory thresholds are adult-like at birth. However, whilst there …
The Influence Of Fluorescent Light On The Development Of In Vitro Fertilized Bovine Oocytes, Jared Bunch
The Influence Of Fluorescent Light On The Development Of In Vitro Fertilized Bovine Oocytes, Jared Bunch
Undergraduate Honors Capstone Projects
Advances in in vitro fertilization and in vitro culture techniques have allowed considerable progress in identifying physiological requirements of mammalian embryos. Parrish et al. (11) reported a major breakthrough on in vitro fertilization when his group identified heparin as an important factor for the capacitation of spermatozoa. Capacitation is necessary for fertilization of matured oocytes. During the precoculture era of embryos (prior to 1980), the development of early preirnplantation embryos was vary limited regardless of medium, medium supplement, gas atmosphere, osmolarity or pH used (7). Coculture techniques of fertilized oocytes using somatic cells during in vitro production, particularly of bovine …