bluuebunny/crossref_metadata_2025_split huggingface dataset:
Securities Laws, Disclosure, and National Capital Markets in the Age of Financial Globalization
Authors: STULZ RENÉ M. 
Published: February 2009

ABSTRACTAs barriers to international investment fall and technology improves, the cost advantages for a firm's securities to trade publicly in the country in which that firm is located and for that country to have a market for publicly traded securities distinct from the capital markets of other countries will progressively disappear. Securities laws remain an important determinant of whether and where securities are issued, how they are valued, who owns them, and where they trade. I show that there is a demand from entrepreneurs for mechanisms that allow them to commit to credible disclosure because disclosure helps reduce agency costs. Under some circumstances, mandatory disclosure through securities laws can help satisfy that demand, but only provided investors or the state can act on the information disclosed and the laws cannot be weakened ex post too much through lobbying by corporate insiders. With financial globalization, national disclosure laws can have wide‐ranging effects on a country's welfare, on firms and on investor portfolios, including the extent to which share holdings reveal a home bias. In equilibrium, if firms can choose the securities laws they are subject to when they go public, some firms will choose stronger securities laws than those of the country in which they are located and some firms will do the opposite.
Evidence for melt migration enhancing recrystallization of metastable assemblages in mafic lower crust, Fiordland, New Zealand
Authors: DACZKO N. R. , HALPIN J. A. 
Published: February 2009

AbstractA major arc batholith, the Western Fiordland Orthogneiss (WFO) in Fiordland, New Zealand, exhibits irregular, spatially restricted centimetre‐scale recrystallization from two‐pyroxene hornblende granulite to garnet granulite flanking felsic dykes. At Lake Grave, northern Fiordland, the composition and texture of narrow (<10–20 mm across) felsic dykes that cut the orthogneiss are consistent with an igneous origin and injection of melt to form orthogneiss migmatite. New U–Pb geochronology suggests that the injection of dykes and migmatization occurred at c. 115 Ma, during the later stages of arc magmatism. Recrystallization to garnet granulite is promoted by volatile extraction from the host two‐pyroxene hornblende granulite via adjacent dykes and the patchy development of garnet granulite is left as a marker adjacent to the melt migration path. New mineral equilibria modelling suggests that a two‐pyroxene hornblende assemblage is stable at <11 kbar, whereas a garnet granulite assemblage is stable at >12 kbar, suggesting that garnet granulite may have formed with <5 km crustal loading of the batholith. Although the garnet granulite assemblages signify that the WFO experienced high‐P conditions, the very local nature of these textures indicates widespread metastability (>90%) of the two‐pyroxene hornblende granulite assemblages. These results indicate the strongly metastable nature of assemblages in mafic lower arc crust during deep burial and demonstrate that the degree of reaction in the case of Fiordland is related to interaction with migrating melts.
A thermodynamic model for titanium and ferric iron solution in biotite
Authors: TAJČMANOVÁ L. , CONNOLLY J. A. D. , CESARE B. 
Published: February 2009

AbstractRecent crystallographic data indicate that in biotite Ti orders preferentially onto the M2 octahedral site rather than onto the M1 site as assumed in previous solution models for K2O–FeO–MgO–Al2O3–SiO2–H2O–TiO2–O2 (KFMASHTO) biotite. In view of these data, we reformulate and reparameterize former biotite solution models. Our reparameterization takes into account Fe–Mg order–disorder and ferric iron contents of natural biotite as well as both natural and experimental observations on biotite Ti‐content over a wide range of physicochemical conditions. In comparison with previous biotite models, the new model reproduces the Ti‐content and stability field of biotite as constrained by experiments with significantly better accuracy. The predictive power of the model is tested by comparison with petrologically well‐characterized natural samples of SiO2‐saturated and SiO2‐undersaturated rocks that were not used in the parameterization. In all these tests, the reformulated model performs well.
Critical evaluation of informed consent forms for adult and minor aged whole blood donation used by United States blood centers
Authors: Shaz Beth H. , Demmons Derrick G. , Hillyer Christopher D. 
Published: February 2009

BACKGROUND: Blood donation is a medical procedure with attendant risks, and thus blood donors should undergo acceptable informed consent. There are no guidelines for the informed consent forms (ICFs) for whole blood donors or for parental consent forms (PCFs) for minor age blood donors. The goal of the study was to determine if the majority of the generally accepted elements of informed consent are provided to volunteer allogeneic whole blood donors in the United States.STUDY DESIGN AND METHODS: ICFs and PCFs along with their accompanying general information forms (GIFs) from nonmilitary blood collection establishments for allogeneic whole blood donation were collected throughout the United States and scored using a system based on the essential elements of informed consent derived from guidelines of consent for research subjects. The overall score for each ICF and PCF was obtained.RESULTS: Twenty‐one ICFs and 37 PCFs from 48 states representing major collection centers within the United States were scored. The mean score for the common essential elements ICFs was 35 percent (range, 10%‐80%) and for PCFs was 46 percent (range, 10%‐90%).CONCLUSION: None of the whole blood allogeneic donation informed consents surveyed contained all the common essential or specific blood donation information desired. There is a need for national guidelines for the informed consent process for both the donor and the parent of a minor to ensure adequate information is specified.
Intrinsic competition and its effects on the survival and development of three species of endoparasitoid wasps
Authors: Harvey Jeffrey A. , Gols Rieta , Strand Michael R. 
Published: February 2009

AbstractIn natural systems, pre‐adult stages of some insect herbivores are known to be attacked by several species of parasitoids. Under certain conditions, hosts may be simultaneously parasitized by more than one parasitoid species (= multiparasitism), even though only one parasitoid species can successfully develop in an individual host. Here, we compared development, survival, and intrinsic competitive interactions among three species of solitary larval endoparasitoids, Campoletis sonorensis (Cameron) (Hymenoptera: Ichneumonidae), Microplitis demolitor Wilkinson, and Microplitis croceipes (Cresson) (Hymenoptera: Braconidae), in singly parasitized and multiparasitized hosts. The three species differed in certain traits, such as in host usage strategies and adult body size. Campoletis sonorensis and M. demolitor survived equally well to eclosion in two host species that differed profoundly in size, Pseudoplusia includens (Walker) and the larger Heliothis virescens (Fabricius) (both Lepidoptera: Noctuidae). Egg‐to‐adult development time in C. sonorensis and M. demolitor also differed in the two hosts. Moreover, adult body mass in C. sonorensis (and not M. demolitor) was greater when developing in H. virescens larvae. We then monitored the outcome of competitive interactions in host larvae that were parasitized by one parasitoid species and subsequently multiparasitized by another species at various time intervals (0, 6, 24, and 48 h) after the initial parasitism. These experiments revealed that M. croceipes was generally a superior competitor to the other two species, whereas M. demolitor was the poorest competitor, with C. sonorensis being intermediate in this capacity. However, competition sometimes incurred fitness costs in M. croceipes and C. sonorensis, with longer development time and/or smaller adult mass observed in surviving wasps emerging from multiparasitized hosts. Our results suggest that rapid growth and large size relative to competitors of a similar age may be beneficial in aggressive intrinsic competition.
Development of an improved laboratory production technique for the coffee berry borer Hypothenemus hampei, using fresh coffee berries
Authors: Jaramillo Juliana , Chabi‐Olaye Adenirin , Poehling Hans‐Michael , Kamonjo Charles , Borgemeister Christian 
Published: February 2009

AbstractThe suitability of a mixture of plaster of Paris and charcoal as a means to regulate the moisture content of coffee berries and the relative humidity (moisture conditions) of the rearing environment and its impact on rearing the coffee berry borer (CBB), Hypothenemus hampei (Ferrari) (Coleoptera: Curculionidae), was evaluated under laboratory conditions using two types of coffee. Coffee berries were kept individually in vials with a 1‐cm layer of the mixture, and the fresh weight of the berries was assessed, as well as the penetration of CBB into the berries, its survival, and its progeny production over a period of 55 days. Significantly higher survival and progeny production was achieved when using the mixture regardless of the coffee type. Compared to the vials without plaster of Paris/charcoal, a six‐ to sevenfold increase in survivorship of the F1 was recorded when using plaster of Paris/charcoal and in the latter treatment berries harboured on average more than 100 individuals, whereas only 1.7 in the vials without plaster of Paris.
Volatile emission in wheat and parasitism by Aphidius avenae after exogenous application of salivary enzymes of Sitobion avenae
Authors: Liu Yong , Wang Wan‐Lei , Guo Guang‐Xi , Ji Xiang‐Long 
Published: February 2009

AbstractEnzymes in the saliva of the English green aphid, Sitobion avenae (F.) (Homoptera: Aphididae), may be responsible for inducing indirect defence in wheat. In this study, we examined the effects of exogenous application of three salivary enzymes of S. avenae, namely, polyphenol oxidase, pectinase, and cellulase, on the release of volatiles from wheat and the attractiveness of these volatiles to the parasitoid Aphidius avenae Haliday (Hymenoptera: Aphidiidae). In greenhouse experiments, parasitism of S. avenae on plants surrounded by pectinase‐treated plants and aphid‐damaged plants was significantly higher than parasitism of aphids on plants surrounded by cellulase‐ and polyphenol oxidase‐treated plants. In Y‐tube olfactometer tests, female A. avenae significantly preferred the volatiles collected from pectinase‐treated plants and aphid‐damaged plants. Gas chromatography‐mass spectrometry analysis showed that two kinds of semiochemicals, sulcatol and sulcatone, were identified only in pectinase‐treated plants and aphid‐damaged plants. In field experiments, parasitism of S. avenae by A. avenae was significantly higher on plants sprayed with a mixture of sulcatol and sulcatone than parasitism on plants sprayed with volatiles collected from cellulase‐ and polyphenol oxidase‐treated plants. These results show that pectinase in S. avenae watery saliva can trigger wheat plant indirect defence, and play a crucial role in interaction between wheat, wheat aphid, and A. avenae.
Female mating status does not affect male mating behavior in the West Indian sweetpotato weevil, Euscepes postfasciatus
Authors: Kumano Norikuni , Haraguchi Dai , Kohama Tsuguo 
Published: February 2009

AbstractBecause multiple mating by females encourages sperm competition, the assessment of female mating status before insemination is important for males in order to avoid the risk of sperm competition or to intensify sperm competition. When interacting with females before sperm transfer, males can alter their mating tactics according to the risk or intensity of sperm competition. Information on how mating systems are associated with sperm competition is essential for sterile insect technique eradication programs, which depend on successful mating of released sterile males with wild females. We tested whether males of the West Indian sweetpotato weevil, Euscepes postfasciatus (Fairmaire) (Coleoptera: Curculionidae), adjusted their mating behavior in response to female mating experience and/or age. As virgin/young female weevils accepted males more easily than non‐virgin/old females, assessing females before insemination can be adaptive for male weevils. We found that E. postfasciatus males were unable to adjust their mating tactics in response to female mating status. Although this mating strategy would be costly for individual male weevils, the ability in males to discriminate female mating status can prevent the chance of mating with already‐mated females containing the sperm of wild male(s). Therefore, the mating tactics of male E. postfasciatus are advantageous for sterile insect technique eradication programs.
The rationale for the introduction of implant dentistry into the dental curriculum
Authors: Lang N. P. , De Bruyn H. 
Published: February 2009

AbstractThis paper provides arguments for the introduction of implant dentistry into the undergraduate curriculum. The survival of teeth is very high when disease is diagnosed and treated properly and maintenance is taken care of. Nevertheless, tooth replacements by fixed and removable prostheses are highly prevalent. It is expected that dentists will face a dramatically increased need to care for elderly patients and partially edentulous patients. Hence, the demand for implant reconstructions will be substantial and more appropriately trained and competent health professionals will be needed. Increasing demands of the patient regarding aesthetics and function will influence the demands for implant therapy. The improvement of oral function and subjective chewing comfort, the preservation of tooth structures or existing reconstructions and the replacement of missing, strategically important teeth are major indications for implant placement. From both a biological and an economical point of view, the single tooth replacement with an implant is the first choice in situations with no or minimally restored neighbouring teeth compared with conventional bridgework. Stability of full dentures represent a major problem especially for the mandible. It is well documented that placement of two implants supporting an overdenture substantially improve chewing capacity, increase quality of life and is a simple and cost‐effective treatment thus rendering such treatment a ‘standard of care’ procedure. There is no doubt that dental students should learn to incorporate the indication of oral implants in their overall treatment planning. Therefore, they will have to understand the basic aspects of healing and tissue integration, basic biomechanical and material science principles as well as surgical and prosthetic techniques. They will have to be able to monitor continuously the peri‐implant tissues, render appropriate supportive therapy and cope with biological and technical complications. While it is evident that the surgical procedure per se may require additional competence, the remainder of the aspects mentioned should be taught in the dental curriculum. This should include the attribution of responsibility for maintenance of implants and handling of biological and technical complications. Moreover, it is desirable to include the surgical technique for implant placement for ‘straightforward’ cases into the dental curriculum. The levels and limitations to which the various aspects of implant dentistry and related skills are to be taught are determined by the academic community. Obviously, ethical and legal aspects of implant dentistry should not be forgotten.
Theoretical knowledge in implant dentistry for undergraduate students
Authors: Hicklin S.P. , Albrektsson T. , Hämmerle C. H. F. 
Published: February 2009

AbstractImplant therapy has evolved into an important part of daily dental practice. Appropriate knowledge of diagnostic and therapeutic options with dental implant therapy is, therefore, mandatory for dental students. The present consensus paper describes the theoretical knowledge as a foundation to the teaching of implant dentistry at the undergraduate level. Students need a solid basic knowledge about biological prerequisites and clinical procedures leading to successful implant treatment and, in particular, an understanding of the importance of embedding implants into the overall treatment concept. Among others this includes aspects of bone and soft tissue integration of dental implants, as well as aspects of materials that are used in implant dentistry. The students should also be able to differentiate between low, medium and high‐risk situations, which assumes that they have knowledge about a proper clinical examination. Furthermore, the students need to be able to inform the patient about the different treatment options and their advantages and disadvantages. Frequently, a choice has to be made between an FDP anchored on teeth and an implant‐borne reconstruction. This is highly influenced by the long‐term prognosis of the different treatment options. In order to perform implant placement in uncomplicated cases and to give appropriate patient information, adequate knowledge of surgical procedure and surgical complications is mandatory. Furthermore, the dentist needs to be competent in evaluating clinical situations and in advising patients about the suitability of the different options, e.g. removable or fixed reconstructions. It is possible that peri‐implant tissue destruction may be a more common finding during long‐term service of implant‐borne reconstructions than was previously believed. The dentist needs knowledge about etiology and pathogenesis of peri‐implantitis and should know how to provide an effective maintenance care programme. In cases of peri‐implantitis the student should be knowledgeable regarding suitable interventions.
Teaching and assessment of implant dentistry in undergraduate and postgraduate education: a European consensus
Authors: Mattheos N. , Albrektsson T. , Buser D. , De Bruyn H. , Donos N. , Hjørting Hansen E. , Lang N. P. , Sanz M. , Nattestad A. 
Published: February 2009

AbstractThis paper constitutes a summary of the consensus documents agreed at the First European Workshop on Implant Dentistry University Education held in Prague on 19–22 June 2008. Implant dentistry is becoming increasingly important treatment alternative for the restoration of missing teeth, as patients expectations and demands increase. Furthermore, implant related complications such as peri‐implantitis are presenting more frequently in the dental surgery. This consensus paper recommends that implant dentistry should be an integral part of the undergraduate curriculum. Whilst few schools will achieve student competence in the surgical placement of implants this should not preclude the inclusion of the fundamental principles of implant dentistry in the undergraduate curriculum such as the evidence base for their use, indications and contraindications and treatment of the complications that may arise. The consensus paper sets out the rationale for the introduction of implant dentistry in the dental curriculum and the knowledge base for an undergraduate programme in the subject. It lists the competencies that might be sought without expectations of surgical placement of implants at this stage and the assessment methods that might be employed. The paper also addresses the competencies and educational pathways for postgraduate education in implant dentistry.
Monocytic differentiation of leukemic HL‐60 cells induced by co‐treatment with TNF‐α and MK886 requires activation of pro‐apoptotic machinery
Authors: Procházková Jiřina , Stixová Lenka , Souček Karel , Hofmanová Jiřina , Kozubík Alois 
Published: February 2009

AbstractThe block of hematopoietic differentiation program in acute myeloid leukemia cells can be overcome by differentiating agent like retinoic acid, but it has several side effects. A study of other differentiation signaling pathways is therefore useful to predict potential targets of anti‐leukemic therapy. We demonstrated previously that the co‐treatment of HL‐60 cells with Tumor necrosis factor‐α (TNF‐α) (1 ng/mL) and inhibitor of 5‐lipoxygenase MK886 (5 μm) potentiated both monocytic differentiation and apoptosis. In this study, we detected enhanced activation of three main types of mitogen‐activated protein kinases (MAPKs) (p38, c‐Jun amino‐terminal kinase [JNK], extracellular signal‐regulated kinase [ERK]), so we assessed their role in differentiation using appropriate pharmacologic inhibitors. The inhibition of pro‐apoptotic MAPKs (p38 and JNK) suppressed the effect of MK886 + TNF‐α co‐treatment. On the other hand, down‐regulation of pro‐survival ERK pathway led to increased differentiation. Those effects were accompanied by increased activation of caspases in cells treated by MK886 + TNF‐α. Pan‐caspase inhibitor ZVAD‐fmk significantly decreased both number of apoptotic and differentiated cells. The same effect was observed after inhibition of caspase 9, but not caspase 3 and 8. To conclude, we evidenced that the activation of apoptotic processes and pathways supporting apoptosis (p38 and JNK MAPKs) is required for the monocytic differentiation of HL‐60 cells.
Inadequate feeding practices and impaired growth among children from subsistence farming households in Sidama, Southern Ethiopia
Authors: Gibson Rosalind S. , Abebe Yewelsew , Hambidge K. Michael , Arbide Isabel , Teshome Aklilu , Stoecker Barbara J. 
Published: February 2009

AbstractWhether current child feeding practices and behaviours among rural households in Sidama, Southern Ethiopia conform to the World Health Organization (WHO) guiding principles for complementary feeding is uncertain. We assessed socio‐demographic status, anthropometry, breastfeeding, complementary feeding practices and behaviours, and motor development milestones in a convenience sample of 97 breastfed children aged 6–23 months from three rural Sidama communities. Energy and nutrient intakes from complementary foods were also calculated from 1‐day in‐home weighed records. Prevalence of stunting ranged from 25% for infants aged 6–8 months to 52% for children aged 12–23 months, whereas for wasting, the corresponding prevalence was 10% and 14%, respectively. Very few children were exclusively breastfed up to 6 months of age (n = 2), or received solids/semi‐solids for the recommended minimum number of times containing the recommended number of food groups. Responsive feeding was not practised and no cellular animal products were consumed. Median intakes of energy, and intakes and densities of micronutrients from complementary foods (but not protein) were below WHO recommendations, assuming average breast milk intakes; greatest shortfalls were for retinol, vitamin C and calcium densities. Mothers of stunted children were shorter and lighter, and from households of lower socio‐economic status than non‐stunted children (P < 0.05). Acquisition of some motor development milestones was delayed in stunted infants compared with their non‐stunted counter‐parts. In conclusion, interventions that address the WHO guiding principles for complementary feeding practices and behaviours, as well as prenatal influences on growth, are urgently required in this setting.