bluuebunny/crossref_metadata_2025 huggingface dataset:
Short Communication: Antibacterial effect of red betel (Piper crocatum) extract in combination with vancomycin against Staphylococcus aureus
Authors: Hartini Yustina Sri , Nugroho Laurentius Hartanto
Published: August 2020

Abstract. Hartini YS, Nugroho LH. 2020. Short Communication: Antibacterial effect of red betel (Piper crocatum) extract in combination with vancomycin against  Staphylococcus aureus. Biodiversitas 21: 3271-3274.  The occurrence of bacterial resistance to a single antimicrobial compound has prompted the search for antimicrobials in the form of compound combinations. The current study was performed to show the antibacterial effect of red betel (Piper crocatum Ruiz & Pav.) in combination with vancomycin against Staphylococcus aureus. The combination of the antibacterial compounds from plant with the antibacterial drug was expected to increase antibacterial activity resulted in the reduction of resistance. The interaction effect of extract and antibiotic combination was performed using the microdilution checkerboard method. The combination of red betel extract with vancomycin showed significantly (p < 0.05) greater inhibition growth of S. aureus compared to red betel or vancomycin alone. The addition of red betel extract to vancomycin reduced Minimum Inhibitory Concentration (MIC) vancomycin to be a-4 fold reduction against S. aureus. There was a synergistic effect of the red betel extract in combination with vancomycin against S. aureus. It is the potential result for future research on the infectious treatment of S. aureus resistant to vancomycin.
Short Communication: Erythrocytes and leukocytes profiles of bottlenose dolphins (Tursiops aduncus) at conservation site
Authors: Satyaningtijas Aryani Sismin , INDRAWATI AGUSTIN , SYARAFINA RIZKA F. , MILANI TALITA F. , SURYAPUTRA M. , SALEEMA AINUL KHADIJA , HANADHITA DESRAYNI
Published: August 2020

Abstract. Satyaningtijas AS, Indrawati A, Syarafina RF, Milani TF, Saleema AK. 2020. Short Communication: Erythrocytes and leukocytes profiles of bottlenose dolphins (Tursiops aduncus) at conservation site. Biodiversitas 21: 3359-3363. Health monitoring of dolphins to ensure optimal welfare in human care is important. This study measured erythrocytes and leukocytes in seven bottlenose dolphins (Tursiops aduncus) as a parameter to assess physiological status in PT. Wersut Seguni Indonesia (WSI) Marine Mammals Conservation. Blood was sampled through the superficial veins of each tail fin for examination of erythrocytes and leukocytes using hemocytometer method. Differential leukocytes were observed using thin blood smears stained by Giemza. The purpose of this study to collect hematological value of captive bottlenose dolphins. The results showed values of erythrocytes was (5.14±0.56) x 106/mm3, (13.86±1.68) gr/dl for hemoglobin, and (44.29±2.69)% for hematocrit. The value for leukocytes were  (4.2 ± 0,82) x 103/mm3 , 63.14 ± 9.77% for lymphocytes, 3.57 ± 1.72% for monocytes, 31.57 ± 8.43% for neutrophils, 1.29 ± 1.60% for eosinophils and 0.14 ± 0.38% for basophils. The average of the seven bottlenose dolphins Neutrophil to Lymphocyte ratio (N/L) was 0.53.
Essential oil from Cymbopogon nardus and repellant activity against Aedes aegypti
Authors: Arpiwi Ni Luh , MUksin I Ketut , Kartini Ni Luh
Published: August 2020

Abstract. Arpiwi NL, Muksin IK, Kartini NL. 2020. Essential oil from Cymbopogon nardus and repellant activity against Aedes aegypti. Biodiversitas 21: 3873-3878. Cymbopogon nardus (L.) Rendle is an aromatic grass from the Poaceae family that produces essential oil mainly in the leaves. The essential oil from C. nardus is known as citronella oil has repellent activity. This research aimed to quantify the oil content of C. nardus leaves, to analyze the essential oil quality, to analyze the repellent activity of lotion with different concentrations of citronella oil against Aedes aegypti, and to examine the quality of formulated lotions. The oil was extracted from leaves using steam distillation, and the quality was examined according to the Indonesian National Standard. The citronella oil was formulated into a lotion with five concentrations (0, 2, 3, 4, 5% w/w). Repellent activity of the lotions against Ae. aegypti was tested using screened cage test method under laboratory conditions. Lotion quality was analyzed for pH, viscosity, homogeneity, and sensorial assessments. The result showed that the oil yield of C. nardus leaves was 0.9% w/w. The color of the oil was pale yellow, specific weight was 0.8819, the refraction index was 1.464, total geraniol was 72.71%, citronellal content was 49.14%, and solubility in 80% alcohol 1:2 was clear. The repellent activity of lotions with citronella oil was concentration-dependent, where a concentration of 5% gave the highest protection. The quality of formulated lotions met the standard and the lotions were nonirritant.
Modified Brewster and pseudo-Brewster angles at the interface between isotropic lossy media
Authors: Oughstun Kurt Edmund
Published: August 2020

Conditions for the appearance of a modified Brewster or polarizing angle

θ
P
′

at which the magnitude of the reflection coefficient

|

Γ
p

|

vanishes when both media have loss are derived. When these conditions are not satisfied, a pseudo-Brewster angle

θ

PB

occurs at which

|

Γ
p

|

is a minimum. Conditions are described under which previous expressions for the pseudo-Brewster angle are valid.
Surface Brillouin scattering study of tantalum nitride (TaN) thin films
Authors: Kuria Jonah , Wamwangi Daniel , Comins Darrell , Every Arthur , Billing Dave
Published: August 2020

Elastic properties of TaN films on (001)Si are investigated by surface
Brillouin scattering (SBS). The velocity dispersion is obtained from
Brillouin frequency shifts and surface acoustic wave phase velocities
derived from measured SBS spectra. The observed Rayleigh surface
acoustic and Sezawa waves indicate a soft on hard configuration. The
elastic stiffnesses from the best fit of the calculated and measured
spectra were

C

11

=
288

and

C

44

=
80

G
P
a

. Using these elastic constants in the
surface elastodynamic Green’s function yielded theoretical Brillouin
spectra in agreement with measured spectra. Employing a least squares
fitting procedure to the elastic constants gives uncertainties in

C

11

and

C

44

as

±

3.7

and

±

2.5

G
P
a

, respectively.
Study on the multimode and single-mode propagation characteristics of variable size chain structures
Authors: Zhong Yunxian , Zhang Dan , Ding Zhendong
Published: August 2020

In this paper, a periodic chain composed of a two-dimensional single-layer dielectric cylinder is studied by the Fourier series expansion method combined with the perfectly matched layer approach. The phase constant and attenuation constant of the conduction mode, the forward propagation leakage mode, and the backward propagation leakage mode are analyzed conceptually under different radii. Then, the numerical properties and field pattern distribution characteristics of single-layer cylindrical periodic structures of different radii are discussed. The odd and even modes are found to coexist in structures with a larger radius, which can be applied to transmission devices such as multimode communication. However, there is only a single mode in structures with a smaller radius, which can reduce cross talk and is applicable to single-mode communication. In addition, the mode-guiding capability of a finite array with only 20 medium rods under plane mode excitation of a specific mode length is discussed. The finite array with different conducting capabilities (propagation, attenuation, cutoff) can be used in mode guiding, sensors, filters, etc.
Unveiling structured domains of persistent luminescent microparticles
using second-harmonic generation microscopy
Authors: Bautista Godofredo , Kallioniemi Leevi , Petit Laeticia
Published: August 2020

We introduce the use of second-harmonic generation microscopy to investigate individual persistent luminescent microparticles that are either embedded in glass or as prepared. Three-dimensional mapping of the second-harmonic generation from monoclinic dysprosium- and europium-doped strontium aluminates, a popular persistent luminescent material, allows us to unambiguously visualize and reveal for the first time the presence of micrometer-sized structured domains from such microparticles. The technique was found to have high potential for studying noninvasively a wide range of individual persistent luminescent entities that are embedded in a variety of glass matrices.
Co-axial spectroscopic snap-shot ellipsometry for real-time thickness measurements with a small spot size
Authors: Lee Seung Woo , Lee Sin Yong , Choi Garam , Pahk Heui Jae
Published: August 2020

Spectroscopic snap-shot ellipsometry of co-axial structure is proposed to solve the large spot size and long measurement time issues of the conventional ellipsometer. By modulating the spectroscopic ellipsometry signal into high-frequency at the spectral domain and measuring the spectrum at the point of the back focal plane, the ellipsometry parameters(Δ, ψ) were measured in real-time with small spot size. Detailed analysis, calibration, and optimization process for the proposed methods are presented. The accuracy and precision of the proposed method were confirmed by comparing the thickness measurement result of SiO2/Si thin-film samples with a commercial ellipsometer.
Scalable selective high order mode pass filter architecture with asymmetric directional couplers
Authors: Ahmmed Kazi Tanvir , Chan Hau Ping , Li Binghui
Published: August 2020

We propose a novel design architecture to realize scalable selective mode filter based on the asymmetric directional coupler structure. In this structure, any arbitrary high-order mode can pass, whereas other unwanted modes are blocked. Furthermore, multiple optical modes can be blocked by only adjusting the structural parameters. As a proof of concept, we experimentally demonstrated a three-mode device and the scalability of the proposed structure is demonstrated by another design of four-mode filter. The proposed architecture offers scalability and high-design flexibility, and it has excellent potential to be used in advanced mode division multiplexing optical networks.
Real-time jitter correction in a photonic analog-to-digital converter
Authors: Olson Joshua , Perlmutter David S. , DeVore Peter T. S. , Chou Jason T.
Published: August 2020

A real-time jitter meter is used to measure and digitally sample the pulse-to-pulse timing error in a laser pulse train. The jitter meter is self-referenced using a single-pulse delay line interferometer and measures timing jitter using optical heterodyne detection between two frequency channels of the pulse train. Jitter sensitivity down to

3
×

10

−
10

f
s

2

/

H
z

at 500 MHz has been demonstrated with a pulse-to-pulse noise floor of 1.6 fs. As a proof of principle, the digital correction of the output of a high-frequency photonic analog-to-digital converter (PADC) is demonstrated with an emulated jitter signal. Up to 23 dB of jitter correction, down to the noise floor of the PADC, is accomplished with radio-frequency modulation up to 40 GHz.
Enhancing the long-term stability of dissipative Kerr soliton microcomb
Authors: Geng Yong , Cui Wenwen , Sun Jingwen , Chen Xinxin , Yin Xiaojie , Deng Guangwei , Zhou Qiang , Zhou Heng
Published: August 2020

A temporal dissipative Kerr soliton (DKS) frequency comb can be generated in an optical micro-cavity relying on the rigid balance between cavity decay (dispersion) and parametric gain (nonlinear phase modulation) induced by an intense pump laser. In practice, to maintain such delicate double balances experienced by the intracavity soliton pulses, it requires precise control of the pump laser frequency and power, as well as the micro-cavity parameters. However, to date there still lacks experimental demonstration that simultaneously stabilizes all these key parameters to enhance the long-term DKS stability. Here, we demonstrate continuous working of a on-chip DKS microcomb for a record-breaking 14 days without showing any sign of breakdown. Such improved microcomb stability is enabled mainly by robust pump power coupling to the micro-cavity utilizing packaged planar-lightwave-circuit mode converters, and faithful locking of the pump frequency detuning via an auxiliary laser heating method. In addition to superior stability, the demonstrated DKS microcomb system also achieves favorable compactness, with all the accessory modules being assembled into a standard 4U case. We hope that our demonstration could prompt the practical utilization of Kerr microcombs in real-world applications.
2 λ switch
Authors: Khope Akhilesh S. P. , Liu Songtao , Zhang Zeyu , Netherton Andrew M. , Hwang Rebecca L. , Wissing Aaron , Perez Jesus , Tang Franklin , Schow Clint , Helkey Roger , Alferness Rod C. , Saleh Adel A. M. , Bowers John E.
Published: August 2020

We demonstrate an elastic multi-wavelength selective switch with up to two wavelength switching capability per crosspoint. We fabricated the switch in a silicon photonics foundry and demonstrated a 17 nm tuning range for ring resonators, with a mean path loss of 2.43 dB. This is a 70% reduction in path loss as compared to previous generations, and we demonstrate a high-speed pulse-amplitude-modulation-4 transmission at 111 Gbps through different paths of the switch.
Design of a multichannel photonic crystal dielectric laser accelerator
Authors: Zhao Zhexin , Black Dylan S. , Joel England R. , Hughes Tyler W. , Miao Yu , Solgaard Olav , Byer Robert L. , Fan Shanhui
Published: August 2020

To be useful for most scientific and medical applications, compact particle accelerators will require much higher average current than enabled by current architectures. For this purpose, we propose a photonic crystal architecture for a dielectric laser accelerator, referred to as a multi-input multi-output silicon accelerator (MIMOSA), that enables simultaneous acceleration of multiple electron beams, increasing the total electron throughput by at least 1 order of magnitude. To achieve this, we show that the photonic crystal must support a mode at the

Γ

point in reciprocal space, with a normalized frequency equal to the normalized speed of the phase-matched electron. We show that the figure of merit of the MIMOSA can be inferred from the eigenmodes of the corresponding infinitely periodic structure, which provides a powerful approach to design such devices. Additionally, we extend the MIMOSA architecture to electron deflectors and other electron manipulation functionalities. These additional functionalities, combined with the increased electron throughput of these devices, permit all-optical on-chip manipulation of electron beams in a fully integrated architecture compatible with current fabrication technologies, which opens the way to unconventional electron beam shaping, imaging, and radiation generation.
High absorption large-mode area step-index fiber for tandem-pumped high-brightness high-power lasers
Authors: Lim Kang-Jie , Kai-Wen Seah Samuel , Yong’En Ye Joash , Lim Wendy Weiying , Seah Chu-Perng , Tan Yunn-Boon , Tan Suting , Lim Huiting , Sidharthan Raghuraman , Prasadh Arumugam Rajendra , Chang Chen-Jian , Yoo Seongwoo , Chua Song-Liang
Published: August 2020

A short absorption length ytterbium (Yb)-doped large-mode area (LMA) fiber is presented as a step forward to mitigate the stern problem of nonlinear scatterings in a tandem pumping scheme adopted for high-power fiber laser. The short absorption length was realized by incorporating high Yb concentration in the fiber core. Furthermore, by replacing the inherent silica cladding with a Ge-doped cladding, we were able to obtain low core numerical aperture (NA) and negate the detrimental effect of index-raising by high Yb concentrations. This overcomes the long-standing limitation in step-index Yb-doped fibers (YDFs) where high cladding absorption inevitably results in high NA, thus hampering single-mode operation. We report an LMA (

∼
575
  

μm

2

) YDF with NA of 0.04 and absorption of 27 dB/m at 976 nm—both traits promote power scaling of single-mode tandem pumped fiber lasers. To our knowledge, this is the highest cladding absorption attained in a low-NA step-index fiber to date. An all-fiber tandem-pumped amplifier was built using only

∼
14
  
m

of the YDF. The amplifier delivered a near-Gaussian beam (

M
2

∼
1.27

) at 836 W output power (pump power limited) with a high slope efficiency of

∼
83
%

. Thanks to the short length and the tandem pumping, no indication of limiting factors such as stimulated Raman scattering, photodarkening, and transverse mode instability was observed.
OBSERVATION ON BEACH EROSION AND CORAL DESTRUCTION BY REMOTE SENSING TECHNIQUES
Authors: Praseno Djoko P. , Sukarno -
Published: August 2020

Remote sensing techniques were used to observe beach erosion at Sengkidu Beach, Labuan Amuk, east coast of Bali. Erosion was caused by wave actions flowing over destructed coral reef. Aerial photography was found useful in obtaining first hand information of the destructed corals and its affects on the beach.
THE FISHES OF SEAGRASS COMMUNITY ON THE WEST SIDE OF BURUNG ISLAND (PARI ISLANDS, SERIBU ISLANDS) AND THEIR VARIATIONS IN ABUNDANCE
Authors: Hutomo Malikusworo , Martosewojo Sularto
Published: August 2020

Monthly collections of fishes in a seagrass community on the west of Burung Island, Pari Islands, were made from May 1975 to February 1976. Seventy-eight species of fishes were collected. Number of specimens, size range, and modal size are given for each month for each species. Number of species and specimens were found highest in July. Relative and total abundances of the more numerous species are summarized. Apogon margaritophorus was the predominant species in the fish community of the area. Notes on the spawning of Siganus canaliculatus are presented, since this species attracts the attention of many mariculturists. The separation of these fishes into four groups is also discussed.
EFFECTS OF ELEVATED TEMPERATURE ON THE MORTALITY AND METABOLISM OF PACIFIC REEF CORALS
Authors: Coles Stephen L.
Published: August 2020

The upper thermal tolerance limits of subtropical (Hawaiian) and tropical (Enewetak) reef corals were determined both in the field and under laboratory conditions. Enewetak corals routinely withstand temperatures up to 34°C whereas similar exposure time at 32°C kill their Hawaiian congeners. These differing upper thermal limits correspond to increases of + 4 - 5°C above the annual water temperature maxima at each location. Reef coral temperature tolerance is therefore closely adapted to the ambient ocean temperature conditions of a geographic location.Studies of temperature effect on reef coral photosynthesis (P) and respiration (R) also showed different patterns between locations. Same species shower greater autotrophic capability at elevated temperatures in Enewetak than Hawaii. Critical temperatures estimated as coinciding with P:R ratio values minimal to support long term functional autotrophy were 2-5°C higher for Enewetak than Hawaiian specimens, closely corresponding to observed differences in upper thermal tolerance. Results support a hypothesis of temperature adaptation capability for reef corals and suggest that short term physiological tests can predict relative differences in temperature tolerance among coral species.
THE MANAGEMENT OF MANGROVES IN AN URBAN SITUATION
Authors: Hutchings P. A. , Recher H. F.
Published: August 2020

Sydney is an affluent city of nearly three million people surrounding three well developed estuaries and a shallow protected bay. These areas all originally had extensive wetlands of salt marsh, mangroves and sea-grass flats. The areas are now being rapidly reclaimed or destroyed by port development, marinas, canal estate development, playing fields, garbage tips or damaged by industry. They are also economically important fishing and oyster farming areas and the water masses are heavily used for recreation. In this paper we have selected three areas of wetlands in this region, threatened by different types of development and we discuss their ecology and their traditional biological attributes and the unique attributes that such areas have in an urban affluent society. These are their educational and recreational values to the community. We describe the planning of an education field centre adjacent to an urbanized wetland area and construction of boardwalks through the mangroves.
STRUCTURAL ANALYSIS OF MANGROVE COMMUNITIES ON THE CENTRAL QUEENSLAND COASTLINE
Authors: Saenger P. , Robson J.
Published: August 2020

The mangrove communities of the Central Queensland coastline are structurally and floristically intermediate between the relatively simple, temperate mangrove communities to the south, and the more complex and luxuriant communities to the north. Climatically the central Queensland coastline is subtropical with a low (1011 mm) annual rainfall, falling mainly in the summer months; evaporation rates are high, particularly in winter. As a result of a four-metre tidal range and a gentlysloping depositional coastline, the areal extent of mangroves is large and most topographic and physiognomic types are represented. Twelve species of mangroves occur in the study area and although zonation is recognizable, the zones are neither constant nor discrete. In the Port Curtis area, three large plots (500 m2 have been established in which all mangroves have been numbered and tagged since January 1975. The results of the initial investigation of the plots are presented together with some of the changes noted on re-examination after 12 months.
A PRELIMINARY STUDY OF THE MANGROVE FOREST ON PULAU RAMBUT, JAKARTA BAY
Authors: Kartawinata Kuswata , Walujo Eko B.
Published: August 2020

Pulau Rambut (± 56ha) is one of the islands of the Pulau Seribu group. It is a coral island covered by disturbed forest and secondary growth at the center, and mangrove forest at its periphery. A study in a 290 x 10 m transect running south to north across the mangrove forest shows a distinct zonation as follows : the Scyphiphora hydrophyllacea - Lumnitzera racemosa community on coral flat with patchy shallow soils on the interior, the Rhizophora mucronata community on relatively deep soil overlaying coral formation, and the R. mucronata - R. stylosa community on periodically submerged coral flat. Profile diagrams established along the transect show structural changes also. The R. mucronata forest is the most developed community and appears to be the most prevalent. R. stylosa forms the pioneer species on this island.
DEMERSAL FISHING ANALYSIS OF KUPANG BAY
Authors: Mosse J. W. , Hutubessy B. G.
Published: August 2020

Study on demersal fish in Kupang bay was carried for 6 months, from July 2002 to December 2002. Sampling was conducted twice a month at the ten-selected locations within the bay using different fishing gears such as gill net, bottom logline, hand line and traps. Fishes caught were stored in a icebox and transferred to the laboratory of the Fisheries Faculty of Artha Wacana Christian University, Kupang for further identification. Similarity index of fish species of the study sites was analyzed using non-metric multidimensional scaling (nMDS) of the matrix Bray Curtis similarity. A computer program PRIMER was used to perform the analysis. The result shows that there are 56 species (total catch 890 fishes) found during this study and their similarity index revealed three groups of study sites. Interestingly, it seems that these species remained to have some strong association with the existing ecosystem.
SEDIMENT TRANSPORT IN THE BASIN OF PULAU BAAI PORT, BENGKULU
Authors: Mihardja D. K. , Supiyati - , Suprijo T.
Published: August 2020

The 2D horizontal model has been simulated to investigate a sedimentation and erosion pattern in the basin of Pulau Baai port — Bengkulu Sumatera. The model was verified with observed data from the Indonesian Research Center for Marine Geology (Arifin et al., 2001). The simulation results of the hydrodynamic model shows a good agreement with the observed data. In -regard to the elevation of sea level, the difference between simulation and the observed data is about 4.6 cm, giving averaged error of about 2.93 %, and the difference in velocity is 6.8 cm/s or in the order of error of about 20.1 %. The results of the model on sediment transport qualitatively show comparable values to the observed ones, although in some parts of the area, the model is still to be adjusted. Simulation results show that the strong current occurs in the harbor channel during the time of spring flood tide with a speed of about 95.4 cm/s, while the ebb current is 54.1 cm/s. The results of the model on sediment transport show that the erosion area occurs in the northeastern part of the basin and sedimentation takes place in the southwestern to southeastern of the channel. The channel port is generally eroded, and sedimentation occurs in the mouth and the western part of offshoreward of the channel, and erosion is identified in the eastern part of the offshoreward of the channel.
BIODIVERSITY AND LENGTH FREQUENCIES OF SHARKS CAUGHT IN THE INDIAN OCEAN
Authors: Dharmadi - , Sumadhiharga K. , Fahmi -
Published: August 2020

Study on biodiversity and size structure of sharks in the Indian Ocean was conducted at several landing sites and fish markets, i.e. Pelabuhanratu (West Java), Cilacap (Central Java), Kedonganan (Bali) and Tanjung Luar (East Lombok ). Field observation was done from April 2001 to March 2006. The results showed that there were 86 species of sharks belonging to 16 families in the Indian Ocean. The sharks were dominated by family of Carcharhinidae and Squalidae with 24 and 23 species, respectively. A high diversity of sharks was found at Kedonganan-Bali (49 species), at Tanjung Luar (47 species), at Cilacap (32 species) and at Pelabuhanratu (27 species). Size of sharks landed at those landing sites varied in length, the length of Carcharhinus amblyrhynchos was between 90 cm and 170 cm TL, C. sorrah (55-155 cm), C. obscurus (205-295 cm) and P glauca was caught at length between 205-300 cm.
MORPHOLOGY OF A NEW HETEROCAPSA SPECIES (PERIDINIALES, DINOPHYCEAE) OCCURED IN HUE, VIETNAM
Authors: Iwataki Mitsunori , Kawami Hisae , Nguyen Nguyen Van , Doc Luong Quang , Phap Ton That , Fukuyo Yasuwo , Matsuoka Kazumi
Published: August 2020

To investigate the distribution of Heterocapsa including a harmful species H. circularisquama, cells were surveyed in three Vietnamese coasts, Ha Long Bay, Hue and Phu Quoc Island in 2006. Cells of Heterocapsa were detected from Lang Co Lagoon and adjacent coast in Hue. Cell of the species possesses thecal plates corresponding to the typical of Heterocapsa. Under TEM, body scales approximately 500 nm in diameter are observed. The scale structure is similar to that of H. illdefina, however, number of the marginal spine is different. We concluded it is an undescribed Heterocapsa species possessing a new body scale ultrastructure.
MACROALGAE DIVERSITY AND LIFE FORMS OF INTER-TIDAL ROCKY SHORES
Authors: Zakaria Muta Harah , Chia Wong Siaw , Bujang Japar Sidik , Arshad Aziz , Ogawa Hisao
Published: August 2020

A study on macroalgae diversity and life form was carried out at inter-tidal rocky shores of Similajau National Park, Bintulu, Sarawak. Thirty five species were identified in this study, of which 15 belong to the division Rhodophyta, 12 to the Chlorophyta and 8 to Phaeophyta. Fifteen species are new records to the Park. Irrespective of areas, macroalgae from the three divisions; Chlorophyta, Phaeophyta and Rhodophyta did not show any distinct zonation. There was high number of macroalgae species in rocky area related to the sandy area. The high representation of macroalgae from rocky area reflects the availability of stable substrate and microhabitats for the occurrence and diversity of macroalgae species. The sandy area lacks hard structure responsible for the relatively low diversity of macroalgae. Four types of macroalgae life forms were identified namely epilithic, epipelic, epizoic and epiphytic. The general distribution, occurrence and a list of the macroalgae is presented.
RECRUITMENT PATTERN OF JUVENILE FISHES INTO PAMI RIVER ESTUARY (WEST PAPUA, INDONESIA
Authors: Suharti Sasanti R. , Sugeha Hagi Yulia
Published: August 2020

Recruitment pattern of juvenile fishes into Pami River estuary, West Papua, Indonesia (S 00.80970, E.134.06050), was studied from July to October 2005. The study purposes were 1) to observe fish diversity in family level, 2) to observe fish abundance of each family, 3) to observe recruitment pattern related to abundance and tidal rhythm. Samples were collected using line transect method and identification procedure were done based on morphological characteristics. A total of 19 Families were identified, namely Acanthuridae, Ambassidae, Anguillidae, Apogonidae, Carangidae, Chlopsidae, Clupeidae, Congeridae, Elopidae, Engraulidae, Gerreidae, Gobiidae, Mugillidae, Platycephalidae, Callyonimidae, Siganidae, Syngnathidae, Terapontidae, Tetraodontidae. Fishes composition varied each month.  Family of Gobiidae was the most dominant juvenile fishes recruiting during this study with 32%, 69.5%, 84.3%, 71.3%, respectively. Other 8 families (Ambassidae, Engraulidae, Elopidae, Chlopsidae , Siganidae, Syngnathidae,  Congeridae , and Callyonimidae) had the lowest composition varied from 0.4% to 3.2%. Three different patterns in abundance during the recruitment time of juvenile fishes, 1) early night (18.00-21.00) was represented by Ambassidae, Chlopsidae, Clupeidae, Gerreidae, Terapontidae, 2) mid-night (22.00-01.00) was represented by Callyonimidae, Congeridae, Engraulidae, Mugilidae, Platycephalidae, Tetraodontidae, and 3) late night (02.00-05.00) represented by Acanthuridae, Apogonidae, Carangidae, Elopidae, Gobiidae, Siganidae, Syngnathidae. However, the peak of abundance occurred at late night (>50 specimens caught), and recruitment pattern of all juvenile fishes has been associated with tidal rhythm.
FATE OF SEAGRASS PRODUCTION AS ASSESSED BY CAGE EXPERIMENTS IN Enhalus Acoroides BED IN GILIMANUK BAY, BALI, INDONESIA
Authors: Azkab M. Husni
Published: August 2020

In 2006, the amounts of seagrass products floating away and depositing were measured by in situ cage experiments in a monospecific seagrass meadow of Enhalus acoroides in Gilimanuk Bay, Bali Island. Results showed that the average rates of the floating and depositing leaves were 4.03 + 0.28 and 7.95 + 0.31 gram dry weight shoot-1 day-1 respectively. To express it in another way, about 66.4 % of seagrass production was deposited on the seagrass bed and 33.6 % floated away from the seagrass bed.
MOLECULAR DIVERSITY OF SECONDARY METABOLITE-PRODUCING MARINE MICROORGANISMS ASSOCIATED WITH INDONESIAN REEF'S INVERTEBRATES
Authors: Radjasa Ocky Karna , Sabdono Agus
Published: August 2020

The metabolites from microorganisms are a rapidly growing field, due to the suspicion that a number of metabolites obtained from reef's invertebrates are produced by associated microorganisms. Less than 2% of microbial flora has been successfully isolated from marine environment. Coral reefs are the most diverse marine ecosystems, however, little is known about the microbial diversity in these ecosystems. It is expected that still quite a few parts of unexplored culturable invertebrate-associated microorganisms exists in the reef environments. The present study aimed at estimating the biodiversity of secondary metabolite-producing microbes associated with reef's invertebrates such as coral, soft coral and sponge collected from geographically different areas.
FISHES OF THE ESTUARIES OF MIMIKA DISTRICT, PAPUA PROVINCE
Authors: Haris Abdul , Lala Deky , Setyadi Gesang
Published: August 2020

Study on estuarine fishes in Mimika district, Papua was carried out at six estuaries from 2000 to 2006, as a part of monitoring program conducted by PT Freeport-Indonesia. This study mainly aimed to document the fish diversity, dominance, abundance and weight. Samples were collected from six estuaries, namely Ajkwa (tailing affected estuary), Tipoeka (disturbed estuary), Minajerwi, Kamora, Mawati and Otakwa (tailings unaffected estuaries). The total fish catches from the study sites during the study were 133 species belonging to 50 families, with the total abundance and wet weight were 85,523 individuals and 1,834 kg, respectively. The indices of diversity and evenness ranged 1.1-2.1 and 0.4-0.8, respectively. Based on the sample abundance, the dominant families consisted of pony fishes (Leiognathidae), drum fishes (Sciaenidae) and anchovies (Engraulidae), catfish (Ariidae) and glassfish (Ambassidae), whereas based on the samples weight, the dominant families comprised of Sciaenidae, Ariidae, Leiognathidae, Engraulidae and Clupeidae. The results show that there were no significantly differences in diver-sities and abundances among the six estuaries of Mimika district.
ISOLATION OF ASP TOXIN-PRODUCING NITZSCHIA FROM THAILAND
Authors: Romero M. L.J. , Lirdwitayaprasit T. , Kotaki Y. , Lundholm N. , Relox Jr. J. , Furio E. F. , Terada R. , Yokoyama T. , Kodama M. , Fukuyo Y.
Published: August 2020

Nitzschia navis-varingica is recognized as the major ASP toxin producer other than Pseudo-nitzschia species. Surveys on the distribution and the toxin production of this diatom has been conducted in a few countries in eastern Asia and expanded to Thailand. Eighteen isolates from Thailand showed the positive result for the ASP toxin production is DA and IB, although the ratio of IB was much lower than those of the isolates from southern countries including Okinawa, Japan, the Philippines and Vietnam.
SPIDER CRABS OF THE GENERA PARATYMOLUS MIERS, 1879 AND LITOSUS LOH & NG, 1999 FROM LOMBOK ISLAND, INDONESIA (CRUSTACEA, DECAPODA, BRACHYURA, MAJOIDEA, INACHIDAE)
Authors: Rahayu Dwi Listyo
Published: August 2020

A small collection of majoid spider crabs of the genus Paratymolus Miers, 1879, s.l from Lombok Island, Indonesia contains four species namely P. hastatus Alcock (1895), P. coccus Loh & Ng (1999), P. cygnus Loh & Ng (1999), and Litosus sexspinosus (Miers, 1884). Except for L. spinosus, the three other species are new records for Indonesia. Paratymolus coccus is previously known from only female specimens, and the presence of male specimens in the collection studied provides the opportunity to complete the description of male characters. Paratymolus hastatus is reported for the first time outside Indian Ocean and P. cygnus is recorded for the first time after its description.
Effects of mGlu4 knock-down in the nucleus accumbens and basolateral amygdala of wild-type mice
Authors: Terrier Claire , Wagnon Ingrid , Genty Julien , Koebel Pascale , Rossiolillo Paola , Ehrilch Ingrid , Becker Jérôme , Le-Merrer Julie
Published: August 2020

Autism Spectrum Disorders (ASD) are neuro-developmental pathologies characterized by social communication and interaction deficiency, and repetitive and restricted behaviors. The social motivation network, notably the nucleus accumbens (NAc), is dysfunctional in these disorders. We previously showed that pharmacological treatment facilitating the activity of the mGlu4 glutamate receptor relieves autistic symptoms in the
Oprm1
-/-
mouse model of autism. Interestingly, we also evidenced that mGlu4 can modulate the activity of the amygdala, a critical brain region for emotional responses and social behavior.

Aim:
Our hypothesis is mGlu4 in the NAc and the basolateral amygdala (BLA) plays a critical role in modulating autism-sensitive symptoms, namely social motivation and stereotyped behaviors.

Methods
: In order to test this, we performed the knockdown of the gene coding for mGlu4,
Grm4, in the nucleus accumbens or the basolateral amygdala of wild-type mice using bilateral stereotaxic injections of shRNA-expressing AAVs. We tested them in several behavioral tests to evaluate the presence or not of autistic symptoms.

Results:
Knocking down (KD) of
Grm4 expression in NAc neurons induces autistic-like symptoms such as impaired social interactions and social preference

Conclusions
: These results suggest that mGlu4 receptors expressed in the NAc and BLA neurons play a major role in modulating sociability in mice.
DE TELHADO EM TELHADO: O PARKOUR NA EDUCAÇÃO FÍSICA
Authors: Vaghetti César Augusto Otero , Borges Marcos Corrêa da Silva , Merino Eduardo , Pereira Dimitri Wuo
Published: August 2020

O objetivo foi apresentar os relatos de praticantes de Parkour em um projeto de extensão desenvolvido na Escola Superior de Educação Física / UFPel, e discutir sua possibilidade de inserção no ensino de Educação Física. Esta pesquisa possui características de um estudo intervencionista qualitativo, resultante de projeto de extensão universitária. Quatro acadêmicos de Educação Física e nove membros da comunidade participaram do estudo. As intervenções ocorreram uma vez por semana, desenvolvidas por estudante do curso de bacharelado em Educação Física. Através de um questionário semi-estruturado com dez perguntas abertas, os participantes afirmaram ser interessante a inserção do Parkour no ensino superior de Educação Física como uma nova oportunidade de trabalho, tanto como um novo método para aptidão física para o bacharel ou para o licenciado, quanto para o ensino superior enquanto disciplina acadêmica e cultura corporal.
REPRESENTAÇÕES DE EDUCADORES SOCIAIS SOBRE A EDUCAÇÃO NÃO ESCOLAR
Authors: Pinheiro Caroline Silva , Wittizorecki Elisandro Schultz
Published: August 2020

O presente estudo trata dos processos educativos que ocorrem em instituições de ensino não escolares e teve como objetivos compreender como se organizam os projetos pedagógicos e atividades desenvolvidas nesses espaços de educação e compreender as representações que educadores constroem acerca da educação não escolar. Para tanto, realizamos um estudo descritivo por meio de observações, diários de campo e questionários com educadores sociais em duas instituições de Porto Alegre. Assim, compreendemos as particularidades desses locais de educação não escolar. São espaços que ofertam uma diversidade de oficinas, buscam complementar o ensino escolar, além de acolher as crianças e suas famílias. Apesar da singularidade das instituições de educação não escolar, encontra-se uma certa aproximação com a organização e ações das escolas regulares.
GESTÃO DEMOCRÁTICA E PARTICIPATIVA: HORIZONTES E POSSIBILIDADES DE CONSTRUIR UMA ESCOLA DE TODOS E PARA TODOS.
Authors: VIEIRA Fernanda Jardim , WILL Edna Maria Assêncio , De LIMA Lamartine Christian
Published: August 2020

A gestão democrática e participativa foi o objeto de análise deste trabalho, no qual visamos estudar os processos democráticos que norteiam e regem a gestão de escolas públicas no Brasil. Considerando o princípio da gestão democrática instituído na legislação vigente como ponto de partida de nosso estudo, fundamentamos este trabalho nas ideias de diferentes estudiosos da área que entendem a gestão democrática como algo imprescindível para a melhoria no ensino público. Analisando o conceito e os fundamentos da gestão escolar democrática, procuramos através deste artigo construir entendimentos e saberes que auxiliem a comunidade escolar a enfrentar as barreiras que entravam a implantação e efetivação da democratização nos espaços escolares, além de abordar os principais fundamentos legais para a implantação da gestão escolar democráticas nas escolas. Mesmo a gestão democrática e participativa estando em fase de implantação, pudemos evidenciar a partir desse estudo que esse modelo de gestão não só abre espaço para a iniciativa, como cobra isso da equipe escolar, alunos e pais. A gestão democrática e participativa tem como cerne envolver toda a equipe escolar e a comunidade na construção de uma proposta coletiva com projetos e ações a serem desenvolvidos, visando a melhoria da qualidade do processo de ensino aprendizagem. Ele envolve a comunidade, abre espaço pra novas ideias e incentiva o educando a se tornar um ser crítico e pensante.
CONSIDERAÇÕES SOBRE AS ARTES NO ENSINO MÉDIO APÓS A LEI 13.415/2017
Authors: Rodrigues Walace
Published: August 2020

Este artigo almeja levantar pensamentos sobre o ensino de Artes nas escolas de Ensino Médio brasileiras após a homologação da Lei 13.415, de 2017, conhecida como a “Reforma do Ensino Médio”. Nossa pesquisa para este artigo foi bibliográfica e nossa análise foi de cunho analítico e qualitativo. Verificamos que houve uma diminuição do tempo de oferta de Artes nas escolas, o que nos leva a pensar em uma precarização na construção de conhecimentos relevantes para os estudantes do Ensino Médio, principalmente aqueles das escolas públicas.
Palimpsestic Tales: Hidden “Histories” of Resistance, Militarization, and Disenfranchisement of the Women of Eritrea
Authors: Iyob Ruth
Published: August 2020

The “history” of the women of Eritrea is a composite of images and narratives that presents them as symbols of the land viewed through the lenses of colonial writers, anticolonial activists, and postcolonial nationalists. These portrayals have tended to deflect a deeper understanding of their lived histories, distorting their actual experiences under colonial rule (1890-1941), during the decolonization period (1941-51), and the era of Ethiopian rule (1952-91). In both the colonial and postcolonial periods, the images constructed by ruling elites mask the harsh realities of women’s unmet aspirations of democratic citizenship, justice, and equality under the law, a tendency that has continued since the country’s independence in 1993 through the palimpsestic gendered narratives of elites in the nation and diaspora. This article challenges these iconic remembrances to reconstruct the lived historical experiences of the multiethnic, multireligious, and multifaceted women of Eritrea.
The Impact of European Christian Imagery on Contemporary Orthodox Tewahedo Iconography in Eritrea
Authors: Tewelde Yonatan
Published: August 2020

This article addresses the impact of modern European Christian imagery on the visual culture of the Orthodox Tewahedo Church of Eritrea, which has a long history of using illuminated manuscripts, paintings, and crosses as essential elements of worship and prayer. Tewahedo icons are characterized by brown- and black-skinned Christian figures and indigenized settings that narrate Evangelical and monastic scripture for devotees. This study highlights the domination of European white imagery in liturgical spheres in Eritrea and assesses the impact on the semiotic composition of locally produced paintings. Further, nuanced codes of race and skin color are analyzed in relation to connotations of good and evil. The semiotic analysis in this article also shows that European influences are more prevalent in religious paintings that depict recognized saints in Catholic Europe, in comparison to images of local monastic saints, whose depiction continues to mirror the visual metaphors and local myths of the Tigrinya people.
The role of renin-angiotensin system and angiotensin-converting enzyme 2 (ACE2) in the development and course of viral infection COVID-19 in patients with diabetes mellitus
Authors: Vikulova O. K. , Zuraeva Zamira , Nikankina L. V. , Shestakova M. V.
Published: August 2020

The role of renin-angiotensin system (RAS) in general and angiotensin-converting enzyme 2 (ACE2) in particular in the pathogenesis and course of viral infection caused by SARS-CoV-2 (COVID-19) is of particular interest. This is due not only to the fact that ACE2 is a receptor for the virus the target cells. RAS hyperactivation in patients with arterial hypertension, cardiovascular disease and diabetes mellitus, is considered one of the most important factors for a more severe infection in persons with concomitant pathology. In addition, the effects of PAS blockage with angiotensin converting enzyme inhibitors (ACE inhibitors) and angiotensin II receptor blockers (ARBs) remains one of the most discussed topics in the literature on COVID-19. Thisreview presents the data on the interaction between the virus and the main components of RAS and the factors influencing their expression level, the impact of ACE inhibitors and ARBs therapy on the disease outcome, and presents theperspectives of the treatment with recombinant ACE 2.
(Im)Pertinências de uma abordagem teórica: a neoliberalização da natureza
Authors: Buhler Eve Anne , Gautreau Pierre , Oliveira Valter Lúcio
Published: August 2020

A crescente incorporação dos processos biofísicos pelo mercado verificado a partir do final dos anos 1980, em especial aqueles relacionados aos avanços das fronteiras agrícolas, foi interpretado por alguns autores em termos de "neoliberalização da natureza". Tal perspectiva foi bastante fértil nos estudos críticos das questões ambientais contemporâneas, mas foi colocada à prova ao sofrer sérias objeções desferidas a partir de diversos ângulos. Algumas dessas objeções questionam os fundamentos teóricos da tese da neoliberalização da natureza e apontam para um certo afrouxamento conceitual frente a diversidade das definições dos conceitos adotados. Outro tipo de objeção se volta para o seu limitado potencial de análise empírica, na medida em que, de tão amplo, não auxilia na compreensão de um conjunto de processos inevitavelmente incompletos e parciais. A presente contribuição propõe um balanço dos debates teóricos e empíricos sobre a neoliberalização da natureza passando por seus principais autores e tomando por referência pesquisas empíricas que temos realizado sobre o agronegócio no Brasil. Discutiremos em que medida os seus limites se devem às inconsistências apontadas pelos seus críticos ou, ao invés (e além) disso, à falta de precauções na mobilização de uma abordagem que merece, apesar de tudo, atenção e interesse.
La educación literaria a través del dialogismo
Authors: Vargas Manrique Pedro José
Published: August 2020

Se propone una revisión sobre la educación literaria desde la perspectiva del dialogismo para derivar algunas reflexiones sobre su pertinencia en contextos escolares de educación básica, media y universitaria. La educación literaria se concibe como un proceso de comunicación dialógica mediante la palabra poética, entre autores, obras literarias, docentes de literatura y estudiantes en el universo dialógico del lenguaje. La educación literaria requiere que los profesores de literatura piensen teóricamente, la asuman desde una visión estética y se comporten éticamente; de esta forma su tarea no será una ilusión y sus resultados pedagógicos no caerán en la nada.
Maestría en Pedagogía de la Lengua Materna
Authors: Rodríguez Luna María Elvira
Published: August 2020

Con la aprobación del Consejo Superior Universitario (Resolución 013 del 27 de mayo de 2008) y el otorgamiento por siete años del Registro Calificado por parte del Ministerio de Educación Nacional (SNIES 54328), la Facultad de Ciencias y Educación de la Universidad Distrital inició –el pasado mes de agosto de 2009– la primera cohorte de la Maestría en Pedagogía de la lengua materna. Este programa está dirigido principalmente a docentes en ejercicio en los distintos niveles de la escolaridad, profesionales con funciones pedagógicas e investigadores en el campo de la lectura y la escritura que acrediten título de pregrado en Ciencias del lenguaje o Ciencias Humanas y Sociales, Pedagogía, Educación o áreas afines.
Reseña proyecto: Evaluar lo oral para cualificar las prácticas de enseñanza y aprendizaje de la lengua materna
Authors: Pinilla Vásquez Raquel
Published: August 2020

La presente investigación está inscrita en el grupo de investigación Lenguaje, Cultura e Identidad de la Universidad Distrital Francisco José de Caldas y para su ejecución cuenta con el apoyo económico del Centro de Investigaciones y Desarrollo científico (CIDC) y de la Facultad de Ciencias y Educación de la misma universidad. Las responsables del proyecto son las profesoras Raquel Pinilla Vásquez, María Elvira Rodríguez Luna y Yolima Gutiérrez Ríos. Cuenta con la participación de dos estudiantes de la maestría en Pedagogía de la Lengua Materna cuya tesis se relaciona con la temática de la evaluación. La Asesora del proyecto es la profesora Ana Atorresi, Consultora UNESCO – SERCE – FLACSO.