bluuebunny/crossref_metadata_2025 huggingface dataset:
One stage hip arthroscopy and periacetabular osteotomy: surgical technique and initial results
Authors: Zanotti Gerardo , Comba Fernando , Genovesi Eduardo , Buttaro Martin , Piccaluga Francisco
Published: January 2017

Aim:

We purposed to describe the surgical technique and preliminary outcomes of combined arthroscopic and periacetabular osteotomy (PAO) for the treatment of non-arthritic hip dysplasia.

Methods:

Between May and August 2015, 4 patients (3 female, 1 male) with an average age of 29 years old (range; 22-33) had undergone one-stage hip arthroscopy and periacetabular osteotomy. Primary symptom was pain associated with instability. Upon radiographic examination, mean lateral center-edge angle of Wiberg was 12° (range; 7°-18°). Intra-articular findings were computed and primary outomes were as follows: radiographic angular correction; time to healing after pelvis osteotomy and functional results according to Merle D’Aubigné Score.

Results:

Minimum follow-up was 6 months whereas maximum was 9 months. Mean surgical time was 98 minutes for hip arthroscopy and 132 minutes for the osteotomy. In all cases, a lesion of the antero-superior labrum and the chondro-labral junction was found and repaired. After correction, overall postoperative center-edge angle was 29° (range; 25°-35°). Bone healing was certified in all cases at 6 months postoperatively. Overall Merle D’Aubigné Score was 17/18 points.

Conclusion:

Combined treatment of non-arthritic hip dysplasia with hip arthroscopy and PAO obtained good clinical and radiological outcomes. Former arthroscopy enables the diagnosis of cartilage lesions and intra-articular pathology as well as it aids in proceeding or not to an open correction.
Maquet Osteotomy, Results
Authors: Díaz Jorge Luis , Vega Marcelo , Matesevach Ivan
Published: January 2017

Objectives:

The objectives are to assess the results and to discuss the indications for Maquet osteotomy in patients with patellofemoral osteoarthritis.

Methods:

Retrospective study of a series of 32 patients (4 bilateral, that is to say, 36 knees) operated between March 1999 and October 2013 in " Arthroscopy Private Center ", 12 male and 20 female, average age 59 years with an average postoperative surgery outcomes of 53 months. The technique consists of an arthroscopic procedure to treat joint lesions and a tibial tuberosity osteotomy of 5 cm long, by embedding a 1cm subsequent graft taken from the same metaphysis and fixed with 2 screws.

Results:

All patients had significant improvement, evaluated with Kujala’s score (54 points preop to 86 points postop) and Guillamon Ferguson’s criteria (27.2 very good and 60.7 good). The complication rate was acceptable.

Conclusion:

The available technics are surgeries on proximal soft structures, osteotomies of tibial tuberosity and patellofemoral arthroplasty. Maquet osteotomy is an excellent procedure when the patient’s selection is right. Obtaining the graft from the same metaphysis simplified the procedure.
Return to Sports after Acute Simultaneous Reconstruction of Anterior Cruciate Ligament Injury and Grade III Medial Collateral Ligament Injury
Authors: Bertona Agustin , Zicaro Juan Pablo , Viescas Juan Manuel Gonzalez , Atala Nicolas , Yacuzzi Carlos , Costa-Paz Matias
Published: January 2017

Objectives:

Combined Anterior Cruciate Ligament (ACL) injury and Medial Collateral Ligament (MCL) injury account for 20% of knee ligament lesions. Conservative treatment of MCL and surgical ACL reconstruction are generally recommended. Significant medial instability after non-surgical management of MCL can lead to ACL reconstruction failure. The optimal management for athletes with combined ACL-MCL injuries remains controversial. The purpose of this study was to analyze the functional and clinical evolution of patients who underwent combined ACL-MCL surgery and their return-to-sport level with minimum 2-years follow-up.

Methods:

A total of 20 athletes with acute simultaneous ACL/Grade III MCL reconstructions were treated between March 2006 and January 2014. The minimum follow-up time was 24 months. Subjective functional results (IKDC, Lysholm), range of motion, anterior-medial and rotational stability (Lachmann, Pivot Shift, valgus stress) were evaluated. The ability to return to sport (Tegner) and the level achieved was recorded.

Results:

All patients significantly improved functional scores and stability tests. The mean subjective IKDC score improved from 37.7 ± 12.9 (range 21-69) preoperatively to 88.21 ± 4.47 (range 80-96) postoperatively (P <0.05). The average Lysholm score was 40.44 ± 10.58 (range 27-65) preoperatively and 90.83 ± 3.38 (range 84-95) postoperatively (P <0.05). Valgus and sagittal laxity was not observed (IKDC A 92% B 8%) at final follow-up. All patients had normal/nearly normal (IKDC A or B) mobility. All patients returned to sports; 90% reached the level they had prior to the ligamentous injury. Of all competitive athletes, 66% achieved the same level of sport.

Conclusion:

In athletes with acute ACL-Grade III MCL lesions, an early simultaneous reconstruction can significantly improve the medial and sagittal stability of the knee. This procedure resulted in excellent functional outcomes, with return to the same level of sports in the majority of patients at short-term follow-up.
ACL Revision in Synthetic ACL graft failure
Authors: Etcheto H. Rivarola , Zordán J. , Escobar G. , Collazo C. , Palanconi M. , Autorino C. , Salinas E. Alvarez
Published: January 2017

The development of synthetic grafts as an alternative to biological grafts for reconstruction of the anterior cruciate ligament dates from 1980. The interest is awakened due to the potential advantages of: The absence of morbidity associated with donor site, and early return to sport. However, this surgical technique has had multiple complications associated with graft: mechanical failures (synthetic graft failure, loss of fixation), synovial foreign body reaction, recurrent stroke, recurrent instability and ultimately, early osteoarthritis.

Objectives:

We describe the synthetic graft failure LCA, intraoperative findings and details of surgical technique.

Methods:

Patient 35 years old, with a history of ACL reconstruction four years of evolution in another health center, consultation with the Service knee arthroscopy for acute knee pain left knee during secondary sporting event to a rotation mechanism with fixed foot. On physical examination, presents and positive Lachman maneuver Pivot. Radiografia in a widening of the tibial tunnel is observed. NMR shows a discontinuity of fibers of synthetic graft.

Results:

First time arthroscopic revision where synthetic plastic LCA identifies with Disruption fiber pattern. Intraoperatively, hypertrophic chronic synovitis localized predominantly in intercóndilo is observed. debridement thereof is performed, and proceeds to the extraction of the synthetic ligament. Then he was made prior cruentado and revival of the edges of the tunnel, filling them with non-irradiated structural bone allograft. At four months as planned and after confirmation by studies incorporating bone graft was performed the second time with the new plastic ACL. It was planned like a primary graft surgery with autologous hamstring prepared in fourfold form, and fixation with modified transtibial technique Biotransfix system proximal and distal screw Biocomposite (arthrex®). A quadruple graft 9 mm was obtained, making good positioning of tunnels and stable fixation.

Conclusion:

While ACL reconstruction with synthetic graft has favorable medium-term results, the proportion of patients with complications of irreversible nature and high rates of dissatisfaction in the long term we are inclined to dismiss the indication of this technique in primary ACL reconstruction, to despite the potential benefits it offers.
Anterolateral Ligament Reconstruction
Authors: Zordan J. , Etcheto H. Rivarola , Blanchod C. Collazo , Palanconi M. , Salinas E. Álvarez , Autorino CM , Escobar G.
Published: January 2017

Anterior cruciate ligament (ACL) reconstruction is a common procedure in daily practice with 75 to 97% excellent long-term results. But in certain cases, some patients perceive rotational instability, for this reason the revision rate can be 10 to 15%.

Objectives:

evaluate functional outcome in revisions of ACL reconstruction associated with ALL.

Methods:

Between July 2015 and February 2016 (11 knees) Eleven Revision ACL reconstruction were performed with ALL with double incision technique performed by the same surgical team. Inclusion criteria were: ACL reconstruction failures with a grade 2 or 3 Lachman test, a grade 3 pivot-shift without other ligamentary injury lesions associated and complete range of motion.

Results:

The concept of rotational instability associated with ACL injury has been described more than a decade ago. However, there is no consensus on how to quantify rotational instability in ACL injuries; so when associating an extracapsular technique. Currently there is a lack of high-level evidence comparing isolated ACL repair and associated with the modified reconstruction of ALL that allows us to define therapeutic approaches. The ALL reconstruction associate an ACL reconstruction remains a matter of study.

Conclusion:

We obtain excellent results in antero – posterior and rotational stability after performing the procedure.
Ensuring Health Care Providers Have Comprehensive Communication Tools for Future Microbicide Introduction in Kenya: A Formative Research Study
Authors: Pack Allison P. , Majors Alesha , Olawo Alice , Tolley Elizabeth E. , Mackenzie Caroline , Ryan Elizabeth , Bockh Emily , Githuka George
Published: January 2017

As the field of HIV prevention advances and new antiretroviral (ARV)-based prevention products are developed, health care providers will play a critical role in promoting or limiting new product use. To provide evidence-based communication supporting potential product roll-out, we developed and assessed a suite of vaginal microbicide communication materials tailored to various Kenyan audiences. However, our materials could potentially be adapted for use with other ARV-based prevention products and settings. For health care providers, we developed three sets of materials: informational brochures, wall charts, and a counseling flip chart. Trained research assistants conducted 24 in-depth interviews with providers from a range of health facilities in Nairobi and Nakuru, Kenya. Interviews assessed providers’ current HIV counseling practices for women in different types of sexual relationships, attitudes toward vaginal microbicide gel, and thoughts on the content and usefulness of the microbicide communication materials; priority was given to the counseling flip chart. Interviews also included hypothetical counseling scenarios to assess providers’ potential to appropriately use materials and adapt their counseling techniques. Microbicide communication materials were well received and effective in educating providers about microbicides and in helping them provide appropriate counseling for hypothetical scenarios involving women in different sexual contexts.
Extracting seismic uncertainties from tomographic velocity inversion and their use in reservoir risk analysis
Authors: Messud Jérémie , Reinier Mathieu , Prigent Hervé , Guillaume Patrice , Coléou Thierry , Masclet Sylvain
Published: January 2017

Structural information in subsurface seismic images is critical for reservoir delineation, reserve estimation, and well planning. However, by its very nature, it is also uncertain. One cause of the image uncertainty is the migration velocity model that directly affects the position of migrated events, both laterally and vertically. (The term “velocity” is meant in the broad sense; i.e., it also includes the anisotropy parameters.) We present a method that accounts for uncertainties in a velocity model estimated by tomography and translates them into the migrated domain. Standard-deviation attributes on target horizon positions or layer thicknesses are extracted. The method includes quality controls for validating the estimated uncertainty attributes before integration with other downstream or interpretative information. The method is demonstrated on a North Sea area covered by data from multiple seismic surveys. We observe that uncertainties increase with model complexity or depth and decrease as the illumination diversity increases. The computed uncertainty maps constitute a valuable source of information for hierarchizing (both qualitatively and quantitatively) different areas in the survey. For the purpose of reservoir risk analysis, we combine our technique with other information (e.g., interpretation uncertainties) to map how uncertainties in the depth of the structural spill point impact the gross rock volume (GRV) estimation of a reservoir.
Uncertainty in orthorhombic model building: Analysis, mitigation, and validation
Authors: Hilburn Guy , He Yang , Wang Bin
Published: January 2017

As seismic processing technologies have advanced, model definitions have grown correspondingly more complex, progressing from isotropy, to transverse isotropy, to the much more general orthorhombic anisotropy. This growth, while supported partly by continued improvements in acquisition techniques and survey geometries, has progressed at such a rate that current projects require solutions to a much greater relative number of unknowns than those in the near past. This added complexity creates ill-posed problems with huge model spaces, leading to a high degree of uncertainty in the final solutions. This uncertainty can be greatly mitigated through pragmatic use of a priori knowledge and intelligent data leverage and model regularization. Orthorhombic anisotropy has been well characterized both microscopically and macroscopically. This understanding allows an unprecedented level of constraint and confirmation for the model-building process by validating the directionality and strength of azimuthal velocity variations. Information within the data itself can also lead to a much more well-determined model-building result. The observed structure can be used to precondition inversion results to ensure geologic plausibility, constraining similar updates to similar events. Concurrently, nonparameterized residual moveout picking allows for complete freedom in describing gather events, yielding results which best resolve the various anisotropic parameters by accurately fitting the gather data and generating a high-resolution model. By properly combining the various constraints available in a well-designed processing project, the myriad uncertainties that arise when moving to an orthorhombic model space can be simplified and reduced, allowing for geologically reasonable solutions that fit data, yield valuable structural information, and enhance interpretation possibilities.
Trends in tissue repair and regeneration
Authors: Galliot Brigitte , Crescenzi Marco , Jacinto Antonio , Tajbakhsh Shahragim
Published: January 2017

The 6th EMBO conference on the Molecular and Cellular Basis of Regeneration and Tissue Repair took place in Paestum (Italy) on the 17th-21st September, 2016. The 160 scientists who attended discussed the importance of cellular and tissue plasticity, biophysical aspects of regeneration, the diverse roles of injury-induced immune responses, strategies to reactivate regeneration in mammals, links between regeneration and ageing, and the impact of non-mammalian models on regenerative medicine.
Morphological asymmetry and habitat quality: using fleas and their rodent hosts as a novel experimental system
Authors: Warburton Elizabeth M. , Khokhlova Irina S. , Kiefer Daniel , Krasnov Boris R.
Published: January 2017

Morphological asymmetry is widely used to measure developmental instability and higher levels of asymmetry often correlate with decreased mating success, increased inbreeding, increased stress, and decreased habitat quality. We studied asymmetry and relationships between asymmetry and host identity in two flea species, host generalist Xenopsylla ramesis and host specialist Parapulex chephrenis and asked 1) what are levels of asymmetry in their femurs and tibiae, 2) which type of asymmetry predominates and 3) whether fleas that fed on host species distantly related to their principal host species produce offspring that exhibit greater asymmetry than those that had fed on their principal host species. We found fluctuating asymmetry in femurs and tibiae of X. ramesis and in the tibiae of P. chephrenis as well as significantly left-handed directional asymmetry in the femurs of P. chephrenis. Host species identity significantly impacted asymmetry in leg segments of P. chephrenis but not in those of X. ramesis. Offspring asymmetry increased when mother fleas fed on a host most distantly related to the principal host. Fleas parasitizing multiple host species might compensate for developmental instability when utilizing a novel host species; therefore, host-switching events in host specific parasites could be constrained by the relatedness between a novel and a principal host species.
Establishing and maintaining primary cell cultures derived from the ctenophore Mnemiopsis leidyi
Authors: Vandepas Lauren E. , Warren Kaitlyn J. , Amemiya Chris T. , Browne William E.
Published: January 2017

We have developed an efficient method for the preparation and maintenance of primary cell cultures isolated from adult Mnemiopsis leidyi, a lobate ctenophore. Our primary cell cultures are derived from tissue explants or enzymatically-dissociated cells, and maintained in a complex undefined ctenophore mesogleal serum. These methods can be used to isolate, maintain, and visually monitor ctenophore cells to assess proliferation, cellular morphology, and cell differentiation in future studies. Exemplar cell types that can be easily isolated from primary cultures include proliferative ectodermal and endodermal cells, motile amebocyte-like cells, and giant smooth muscle cells that exhibit inducible contractile properties. We have also derived ‘tissue envelopes’ containing sections of endodermal canal surrounded by mesoglea and ectoderm that can be used to monitor targeted cell types in an in vivo context. Access to efficient and reliably generated primary cell cultures will facilitate the analysis of ctenophore development, physiology, and morphology from a cell biological perspective.
Technological Change and Risk Adjustment: Benefit Design Incentives in Medicare Part D
Authors: Carey Colleen
Published: January 2017

Subsidized health insurance markets use diagnosis-based risk adjustment to induce insurers to offer an equitable benefit to individuals of varying expected cost. I demonstrate that technological change after risk adjustment calibration—new drug entry and the onset of generic competition—made certain diagnoses profitable or unprofitable in Medicare Part D. I then exploit variation in diagnoses' profitability driven by technological change to show insurers designed more favorable benefits for drugs that treat profitable diagnoses as compared to unprofitable diagnoses. In the presence of technological change, risk adjustment may not fully neutralize insurers' incentives to select through benefit designs. (JEL G22, H51, I13, I18, L65, O33)
Are Information Disclosures Effective? Evidence from the Credit Card Market
Authors: Seira Enrique , Elizondo Alan , Laguna-Müggenburg Eduardo
Published: January 2017

Consumer protection in financial markets in the form of information disclosure is high on government agendas, even though there is little evidence of its effectiveness. We implement a randomized control trial in the credit card market for a large population of indebted cardholders and measure the impact of Truth-in-Lending-Act-type disclosures, de-biasing warning messages and social comparison information on default, indebtedness, account closings, and credit scores. We conduct extensive external validity exercises in several banks, with different disclosures, and with actual policy mandates. We find that providing salient interest rate disclosures had no effects, while comparisons and de-biasing messages had only modest effects at best. (JEL D14, D83, G21, G28, O16)
Reconstructing concealed cultural remains through integrated geophysical tomographic methods.
Authors: Soupios P. , Papadopoulos N. , Sarris A.
Published: January 2017

The purpose of this work was to compare the mapping of shallow subsurface archaeological structures through Seismic Refraction Tomography (SRT), Electrical Resistivity Tomography (ERT) and Ground Penetrating Radar (GPR) methods. For achieving the goals of the project, a specific section of the archaeological site in Delphi has been surveyed through the employment of the above techniques. For the SRT survey, twenty four P-wave geophones were installed randomly in a 50 by 40 m area. Totally seventy three (73) shots were made by striking a metal plate with a sledgehammer to collect about 1752 travel-times. The pole-dipole array was employed to capture the ERT data along twenty densely spaced parallel profiles. The GPR data were collected along parallel sections with a resolution of 50 cm between the lines. The SRT and ERT field data were processed with modern tomographic inversion algorithms for the reconstruction of the 3-D velocity and resistivity models describing the buried archaeological remains and the subsurface matrix up to the depth of 5 meters below the ground surface. GPR signals were enhanced with specific filters signifying the shallow structures up to 2 meters below the ground surface. The integrated processing results indicate the existence of walls buried in a relatively uniform background soil. The outcome of this approach signifies that SRT, ERT and GPR methods can be used as a validation tool in any archaeological investigation by providing accurate tomographic subsurface models and contribute in cultural resources management.
Late bronze age pottery as indicator of the deposition temperatures of the Minoan pyroclastic products, Santorini, Greece.
Authors: Tema E. , Pavlides S. , Kondopoulou D.
Published: January 2017

The Minoan eruption of Santorini volcano (Greece) took place in the Late Bronze Age (17th century BC) and produced a great volume of volcanic products that covered the whole island and buried every human settlement under meters of pyroclastic deposits. In this study we used thermal analysis of the magnetic remanence carried by pottery fragments buried under the pyroclastic deposits in order to estimate the thermal effect of the Minoan volcanic products on the pre-eruption habitation level. A total of 70 samples, prepared from 45 independent pottery fragments, have been studied. Samples were collected from three different sites, situated  at  the southern part of the island. Stepwise thermal demagnetizations reveal that the pottery fragments generally carry a two-component remanent magnetization. Interpretation of the demagnetization results using the normalised intensity decay curves and the orthogonal projection diagrams indicates that most samples were re-heated at temperatures around 160-260o C. The obtained results represent the equilibrium temperatures reached after the deposition of the pyroclastic fall and show that the pyroclastic fall deposits at distances around 6 to 9 km from the eruption vent were still hot enough to reheat the buried pottery at such temperatures.
Globally valid relations converting magnitudes of intermediate and deep-focus earthquakes to MW
Authors: Tsampas A. D. , Scordilis E. M. , Papazachos C. B. , Karakaisis G. F.
Published: January 2017

An essential step in the compilation of homogeneous and complete earthquake catalogs is the thorough investigation of potentially robust relations between different magnitude scales. The vast majority of already published relations usually concerns shallow-focus earthquake data with depths up to 60-70 km. In the present study, several magnitude scales reported by 66 world-wide data providers in conjunction with published catalogs are examined within the depth range of 61-700 km, by applying least-squares regression analysis. Among other widely used scales, as body wave (mb, mB) and surface wave (Ms) magnitudes cited by International Centers (i.e. ISC, NEIC and IDC), the behavior of relevant magnitude scales determined by MOS (Moscow, Russia), BJI (Beijing, China), DJA (Djakarta, Indonesia) and the Japanese magnitude calculated by JMA, is also examined. By this way, robust calibrating relationships of 12 magnitude scales to the moment magnitudes provided by GCMT, NEIC and JMA are defined. From the obtained results important observations on the behavior of certain magnitude scales were made. Thus, a remarkable variation of mb scale cited by IDC could be noted for intermediate and deep focus events. Furthermore, a comparison with the Mw of NIED revealed an apparent lower “saturation” level around 5.0 below which the moment magnitude values published by GCMT and NEIC, are systematically overestimated.
The CLEARWATER project: preliminary results from the geophysical survey in Tympaki, Crete, Greece.
Authors: Vafidis A. , Andronikidis N. , Hamdan H. , Kritikakis G. , Economou N. , Panagopoulos G. , Soupios P. , Steiakakis E. , Manoutsoglou E.
Published: January 2017

One of the most important environmental problems in coastal areas is the salinization of ground water. The groundwater contamination due to seawater intrusion is usually caused by a violation of a delicate hydrogeological balance that exists between freshwater and seawater in coastal aquifers. The development of a methodology for the prediction of the systematic sea water intrusion can contribute to the planning of effective  prevention  measures  in  the  coastal  areas.  The  geophysical techniques offer a suitable non-invasive method for determining the geometric characteristics of an aquifer and monitoring the saline water intrusion. Among all geophysical techniques, the most successful methods, concerning the detection of salinization in the coastal areas, are the electric resistivity and electromagnetic methods. Seismic methods can also help in providing further geological information for the stratigraphy. In this work, we present the preliminary results from the geoelectrical survey conducted in Tympaki basin (Herakleio, Greece) within the framework of the project “geophysiCaL basEd hydrogeologicAl modeling to pRevent pollution from sea WATER intrusion at coastal areas”
?Kimmeridgian-Tithonian shallow- water platform clasts from mass flows on top of the Vardar/Axios ophiolites
Authors: Kostaki G. , Kilias A. , Gawlick H. J. , Schlagintweit F.
Published: January 2017

The Late Jurassic to Early Cretaceous sedimentary succession of the Neochorouda Unit lies unconformably on top of the Oreokastro ophiolites of the Vardar/Axios “suture zone” in northern Greece. This succession consists of turbidites and mass flows and provides an upper limit for ophiolite emplacement. New biostratigraphic and microfacies analysis from the clasts in the mass flows were carried out for a better understanding of the Late Jurassic to Early Cretaceous geodynamic history. Microfacies and organism content prove the onset of Late Jurassic carbonate platforms on top of a Middle to Late Jurassic nappe stack striking from the Eastern Alps to the Hellenides. Middle to Late Jurassic nappe stacking towards WNW to NW followed late Early to Middle Jurassic intra-oceanic thrusting in the Western Vardar/Axios (= Neotethys) Ocean and subsequent ophiolite obduction onto the Pelagonian Units forming a thin-skinned orogen on the lower plate. After ophiolite emplacement Kimmeridgian- Tithonian carbonate platforms sealed widespread this tectonic event. Tithonian extension due to mountain uplift resulted in partial erosion of these platforms and new extensional basins were formed. Late Tithonian to earliest Cretaceous erosion of the uplifted nappe stack including the obducted ophiolites resulted in sediment supply into the newly formed basins also east of the Pelagonian Units.
The geothermal occurrence of Kapistri, Ierapetra area, Crete
Authors: Chatzigiannis G. , Kavouridis Th.
Published: January 2017

The geothermal occurence is located close to the Kapistri village, Ierapetra town, prefecture of Lassithi. In some water wells temperature of about 25oC in a depth of 100 - 150 m below surface, were measured. The calculated geothermal gradient is thus double in size compared to normal gradient.The geological environment is composed of platy limestones of the autochthonous series of Crete on which units of phyllite – quartzite series as well as Pindos and Tripoli zones are overthrusted. Granite intrusion occurs in the carbonates with distinct contact metamorphism, in the Kapistri area. Intense tectonic activity is observed in the wider area of the Ierapetra graben with main fault direction N – S, E –W, NW – SE, and NE – SW.The elevated geothermal gradient, the intense faulting of the area and the existence of deep circulated water indicates the development of a deeper geothermal field.
Geomorphological mapping of Messogia plain (East Attica, Greece).
Authors: Skentos A. , Liosis N. , Pavlopoulos K.
Published: January 2017

This study concerns the geomorphological mapping of the area included in the map sheets Koropi and Plaka of the Hellenic Military Geographical Service map distribution in scale 1:50.000. This is an extensive area of East Attica which presents a complex terrain and a wide variety of landforms, due to its intense tectonism and the natural processes that shaped its morphology. The primary data that were used in the creation of the map mainly included geological and topographic maps, from which thematic layers of the topography, hydrography and geology were constructed through GIS processes. A Digital Elevation Model was also constructed, from which the slope and aspect maps were created. The thematic maps of slοpe and lithology were classified into categories, which were combined to constitute detection criteria of landforms. Decisive contribution in mapping was provided by the available orthophotomaps and aerial photographs, as well as the field work. Finally, with the appropriate combination of colors and symbols the geomorphological map of the study area was produced.
Source constraints using ground motion simulations.
Authors: Kiratzi A.
Published: January 2017

We study the source characteristics of the 9 August 1912, Mw 7.4, Mürefte (Ganos) earthquake that ruptured the Ganos Fault in the westernmost segment of the North Anatolian Fault. We apply the stochastic method for finite-faults in order to simulate strong ground motion acceleration using different fault geometries in terms of therupture initiation and the length of the fault. A first-order approximation of the site effect variation is achieved following an empirical approach based on the topography gradient as a proxy for site-effect. The simulated ground motions, which are calculated at phantom stations, over a grid covering the area of study, satisfactorily produce the regions which were more severely shaken during the 1912 event. We simulate ground motions using a conservative fault length of 50 km (one land segment) which is able to explain the location of the surface ruptures but is not able to reproduce the surface extent of strong shaking. We then use a longer fault ofapproximately 120 km, extending to Saros Bay in the west and to Marmara Sea in the east. The synthetic peak ground acceleration values, indicate a segmented nature of the fault, have at least two patches of strong shaking and significantly predict the observed macroseismic intensities of the 1912 earthquake. Further constrain in our modelling is posed by surface ruptures, with small releasing andrestraining structures and 1.5–5.5 m right-lateral offsets, that have been previously measured by others, at 45 sites of the on-land ~50-km-long fault section.
The value of geological data, information and knowledge in producing landslide susceptibility maps.
Authors: Tsangaratos P. , Koumantakis I.
Published: January 2017

The  paper  attempts  to  illustrate  the  value  of  Geological  data,  information  and knowledge in studies that investigate landslide phenomena and how this is reflected in the production of landslide susceptibility maps. In particular, the concepts  of data, information, knowledge and wisdom are defined and also the process of converting data into information and information into knowledge. The presented study continuous with a summary that introduces landslide phenomena and the available techniques and methods for identifying and classifying these natural phenomena. It describes the significance of landslide analysis and how this process is essential in order to orient intelligence decisions regarding strategies for regional and urban development. The susceptibility maps that are considered as the outcomes of the over mentioned process, reflects the Geological Knowledge that has been produced by involving expert knowledge and processing data.
Pollution assessment of the Drapetsona Keratsini coastal sea- bed.
Authors: Kapsimalis V. , Talagani P. , Panagiotopoulos I. P. , Kaberi H. , Rousakis G. , Kanellopoulos Th. D. , Iliakis S. , Hatzianestis I.
Published: January 2017

The   pollution status of the Drapetsona-Keratsini coastal environment is assessedthrough sedimentological and geochemical analyses of surface sediments. The results show that the sedimentary seabed consists of sandy silts and silty sands with relatively  high  moisture  content  (up  to  114%)  and  carbonate  concentration  (24 -86%), whilst the levels (measured in μg/g) of  some  harmful heavy     metals   , i.e. , As=8 -2677,  Cd=0.2-15.4  , Cr=82-428,  Cu=18-567,    Fe=5700-289,000 ,  Hg=0.05-0.71  ,Mn=101-1477, Ni=25-122,Pb=18-1394,    Sn=1 -18, and  Zn=118   -4821  , are particularly high. The implementation of various pollution indices, such as Geoaccumulation Index (Igeo), Potential Ecological Risk Index (RI), Pollution Load Index (PLI), Combined Contamination Index (W), and Modified Contamination Degree (mCd)   , together with the evaluation of biological risk using the Sediment Quality Guidelines (ERL/ERM and TEL/PEL) of NOAA indicate a very high degree of pollution with great possibility for serious and irreversible impairments for aquatic communities. The most polluted sector, probably the most heavily contaminated marine environment in Greece, is located in front of the Drapetsona rocky coast (and    particularly in the Sfageion Bay), where the synergistic action of urban untreated sewage deposited in the past (before the operation of the sewage treatment plant in Psyttalia) and wastes from local industries or facilities has caused significant degradation of the marine system.
Assessment of heavy metals contamination in the coastal sediments of the broader area of Chios harbor (Aegean Sea)
Authors: Tsoutsia A. , Kapsimalis V. , Poulos S. , Paraskevopoyloy V. , Dassenakis E.
Published: January 2017

The  present  study  evaluates  the  pollution  level  of  the  surficial  sediments  of  the coastal area around the city of Chios (east Aegean Sea), with particular emphasis on  the  Port  of  Chios,  fishing  shelters,  the  waste  water  treatment  plant  and  the electric power plant. For this reason, the metals/trace metals (Pb, Fe, Zn, Cu, Cr, Mn, Al, Ni) along with total organic carbon (TOC) and CaCO3 were analyzed in 23 sediment samples. The results showed that the highest concentrations are observed in the main Port, offshore the power plant station and in a small fishing shelter, without being considered as dangerous for the marine organisms and human health, according to metal pollution indices and Sediment Quality Guidelines.
The tectono-stratigraphic evolution of Eastern Mediterranean with emphasis on Herodotus Basin prospectivity for the development of hydrocarbon fields
Authors: Elia C. , Konstantopoulos P. , Maravelis A. , Zelilidis A.
Published: January 2017

The eastern part of the Mediterranean Sea is of great geological interest. One of the main interesting topics is the genesis and the development of hydrocarbon fields in the area. The analysis of the palaeogeographic evolution of two major basins in eastern Mediterranean Sea, such as Levantine basin and Herodotus basin, shows the same evolution and accommodate the same sediment types. Also, the presence of the Eratosthenes Continental Block (E.C.B.) and the Nile cone, have their own role in the development of the basins and the wider Eastern Mediterranean region. With the help of seismic data, petroleum geology, the evolution of both basins and other geological structures of the region, we can compare the two basins. From the comparison we concluded that Herodotus basin hosts at least the same amount of gas and oil as the Levantine basin.
Investigation and mitigation of a failure at the Taxiarches canal of Mornos aqueduct
Authors: Mourtzas N. D. , Gkiolas A. , Vakiris D. , Soulis V.
Published: January 2017

The sudden soil fracture and failure at the Taxiarches canal of Mornos Aqueduct of the Athens Water Supply and Sewerage Company (EYDAP SA), took place approximately 540m after the exit of Elikonas tunnel and resulted in failure and displacement of the canal segments along an 80m long section. Due to the failure the water supply was interrupted and two extensive gullies, spaced 75m apart, were created by the water outflow. The water discharge resulted in subsoil erosion and transportation of vast masses of geomaterial and two of the canal segments downhill. The debris flow destroyed part of Prodromos-Saranti Road, swapping along olive cultivations and causing extensive damage to Saranti settlement. The failure of the canal occurred in an area of steep morphology, at the front of an overthrust, within tectonic breccia and calcareous-clayey material of chaotic structure and reduced mechanical properties, vulnerable to erosion. The boundaries of the main fracture were defined by the thrust geometry. Τhe study of permanent remedial measures included excavation of a cut in the natural slope on the uphill side of the failure, construction of a bypass pipe founded on bedrock and of an anchored pile wall with pre-stressed anchors on the downhill side of the new pipe, excavation and removal of the temporary fill and finally construction of a reinforced fill for rehabilitation of the slide area.
Neotectonic analysis, active stress field and active faults seismic hazard assessment in Western Crete
Authors: Mountrakis D. , Kilias A. , Pavlaki A. , Fassoulas C. , Thomaidou E. , Papazachos C. , Papaioannou C. , Roumelioti Z. , Benetatos C. , Vamvakaris D.
Published: January 2017

Within the framework of this study the complicated fault system of Western Crete was napped in detail and its kinematic and dynamic setting was analysed in order to distinguish 13 major active and possible active fault zones, the seismic potential of which was assessed. Moreover, kinematic data and striations were used to estimate the corresponding stress field geometry. Two stress phases were recognized: 1st the N-S extension phase (D1) in Mid-Upper Miocene to Lower Pliocene times forming E-W normal faults that bound the Neogene basins; 2nd the E-W extension phase (D2) in Late Pliocene-recent times forming N-S trending active normal faults. Smaller, mainly NE-SW trending faults, with significant strike-slip component, indicate a kinematic compatibility to the D2 phase, acting as transfer faults between larger N-S fault zones. The faults were incorporated in a detailed seismic hazard analysis together with the available seismological data, involving both probabilistic and deterministic approaches, for seismic hazard assessment of several selected sites (municipalities).
Morphotectonic analysis of Kozani Basin (Western Macedonia, Greece)
Authors: Simou E. , Karagkouni V. , Papantoniou G. , Papanikolaou D. , Nomikou P.
Published: January 2017

Kozani Basin is located in northern-central Greece and constitutes the southernmost of the Plio-Pleistocene basins of western Macedonia. Quantitative and qualitative analysis of morphological slope values, as well as the analysis of the drainage pattern in Kozani Basin confirms that the current topographic relief reflects intense neotectonic activity. Synthetic Morphotectonic Map of the under study area was carried out by means of the combined use of: (a) Digital Elevation Model (DEM), (b) Slope Distribution Map, (c) Morphological Slope Map and (d) Drainage Pattern Map. The composition of the digital modelling in conjunction with the regional geological setting, allows the identification of the main morphological discontinuities and lineaments that result from morphotectonic interpretation. The high morphological slope values indicate well-defined morphotectonic features, which mainly trend NE - SW and, secondarily, NW - SE. Distinct tectonic structures are mostly recognized in the SE margin of Kozani Basin, which is characterized by intense topographic relief. The main large-scale tectonic structure trends NE - SW and corresponds to the major Aliakmonas marginal fault zone that bounds the Kozani basin to the south. On the other hand, the NW margin’s features are indiscernible; thus, the criteria for their recognition are based on the existence of the river terraces, which reflect the tectonic control. The results of our studies are presented on the Morphotectonic Map, which is followed by our 3D model of Kozani Basin.
Development of innovative environmental applications of attapulgite clay
Authors: Zotiadis V. , Argyraki A.
Published: January 2017

In this paper we present a series of laboratory and field, pilot- scale applications of attapulgite clay as an amendment for the stabilization of metals in contaminated soil and sewage sludge. Attapulgite’s structure together with its fine particle size and fibrous habit are responsible for its high specific surface area and sorption properties. A pilot scale application of attapulgite clay as a binder for in situ stabilization of toxic metals in contaminated land showed significant reduction in the water leachable metal fraction (Cu: 17%, Pb: 50%, Zn: 45%, Cd: 41%, Ag: 46%, As: 18%, Mn: 47%, Ba: 45%, Sb: 29%). In a second pilot scale environmental application, an innovative attapulgite “Geosynthetic Reactive Clay - GRC” was designed and developed for “capping” and “stabilization”of toxic metals in contaminated soil. Also, laboratory scale experiments with fresh sewage sludge from a municipal water treatment plant showed that addition of attapulgite clay in sludge, significantly reduced the leachable concentrations of phenol, DOC, Hg, Cu, Mo, Pb, Se, As, Zn and pathogen population over a 4 weeks observation period. The developed soil remediation techniques are promising and cost-effective under present market conditions. Concerning treatment of sewage sludge, attapulgite clay is an effective additive that could enhance the composting procedure creating an environmental added value, final compost product.
SEDIMENTOLOGICAL AND GEOCHEMICAL CHARACTERIZATION OF HOLOCENE SEDIMENTS, FROM ALIKES LAGOON, ZAKYNTHOS ISLAND, WESTERN GREECE
Authors: Avramidis P. , Panagiotaras D. , Papoulis D. , Kontopoulos N.
Published: January 2017

The study area is the Alikes wetland (an old salt pan) which is located in the northern part of Zakynthos island. In the Alikes lagoon an exploratory borehole (GA-1) were drilled in a depth up to 21.20m. A total number of forty six (46) samples were analysed for their particle size, calcium carbonate and total organic carbon content. Moreover, bulk sample chemical analyses for major and trace elements were carried out on 12 samples, as well as mineralogical analysis for bulk, oriented and the clay fraction (<2 μm) were determined by powder X-Ray diffraction. The grain size characteristics, statistical parameters and TOC, for the Holocene analysed samples, suggest a coastal environment (restricted-shallow) with reduced salinity such as a lagoon margin and in a tidal flat and/or marsh particularly. Depositional environments and the source material affecting the geochemical signature indicating that that Al, Mg, K are mainly associated with the aluminosilicate fraction of the sediments analyzed, Fe and Ti consistent with detrital phases, while Ca, Si, P, and Mn showing different geochemical patterns.
THE FLUVIAL ACTION OF THE KARLA BASIN STREAMS IN A NATURAL AND MAN – MADE ENVIRONMENT
Authors: Moumou Ch. , Vouvalidis Κ. , Pechlivanidou S. , Nikolaou P.
Published: January 2017

This study investigates the fluvial action of streams draining the Lake Karla basin, located in the plain of Thessaly, in Central Greece. Until a few decades ago, a large part of this area had been occupied by a lake. In order to find out the relation between the channel bed morphology and the oscillations of the local base level due to variations in water level and human intervention in the lake, the following streams were investigated: the flumes of Mpegiatiko, Bagiorema, Bathurema, Xerias and Maurorema. The width and the length of all channels were measured with a laser range finder while the incision and the erosive events were recorded by GPS with sub-meter accuracy. Furthermore, an integrated GIS analysis was undertaken in order to illustrate the changes in the water level of Lake Karla coupled with historical data and data from previous studies. It will be shown that there were two main evolutionary stages which controlled the local base level changes of the studied area. The first one is connected to the continuous changes in the lake’s water level and its reduction from 64m to 45m a.s.l. This resulted in the incision of the channels and the creation of characteristic knick points upstream. The second stage is associated with the draining of Lake Karla in 1962. This intervention mostly altered the streams that developed into fine-grained material channel beds.
GEOPARKS MANAGEMENT AND ASSESSMENT
Authors: Zouros N. , Valiakos I.
Published: January 2017

Established in 2000, the European Geoparks Network (EGN), comprising 35 members (November 2009), aims to protect geodiversity, to promote geological heritage to the general public as well as to support sustainable economic development of geopark territories primarily through the development of geological tourism. All requests for recognition as a “European Geopark” must be submitted by the organisation in charge of managing the area. The application dossier includes precise information dealing with identification of the zone, scientific description of the existing geoheritage, management body, management plan, infrastructure, educational and promotional activities, sustainable development policy instituted and geo-tourism. Membership of the EGN is for a period of four years after which membership is reviewed and assessed. The first revalidation procedure occurred during 2004 and since then has helped to keep all Geopark operations, infrastructure and services at a high quality level. The revalidation process involves a field visit by two independent evaluators nominated by the EGN and UNESCO. Assessment methodology examines the progress in geological heritage protection and promotion as well as the development of sustainable economic activity within each territory. However it also takes into account the Geopark’s degree of active participation in international collaboration and networking.
ELASTIC PROPERTIES OF ROCKS
Authors: Karagianni A. , Karoutzos G. , Ktena S. , Vagenas N. , Vlachopoulos I. , Sabatakakis N. , Koukis G.
Published: January 2017

The aim of this paper is to determine the elastic parameters of some rocks and especially limestones, schist, sandstones, conglomerates, peridotites and granites using a large number of laboratory tests performed on intact rock samples. The range of values for Young`s modulus and uniaxial compressive strength is evaluated, while the relationship between elastic and strength parameters is defined. Regression analyses were applied to define relations among these parameters and the range of values of modulus ratio (MR) is estimated for each rock type.